An independent journal of media, tech, and AI business, for professionals who run digital. Weekly analysis of paid, SEO, AI search, measurement, and martech.https://mediovsky.com/en-ushttps://mediovsky.com/kehai-web-analytics/https://mediovsky.com/kehai-web-analytics/Kehai is the web analytics product I designed, wrote, and run from Warsaw. This is the full tour: how it counts without a cookie, what the panel shows, what it costs, and what it deliberately does not do.Wed, 14 Oct 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/ad-tech-final-judgment-dispute/https://mediovsky.com/ad-tech-final-judgment-dispute/The joint draft agrees on what Google must build and splits on when, where, and who checks. The gaps are six months on Prebid access, a separate 24-month clock outside the United States, and most of the monitor’s powers.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/amazon-seller-assistant-workflows/https://mediovsky.com/amazon-seller-assistant-workflows/Seller Assistant gained standing workflows, a memory, and a plugin for Claude and Amazon Quick. One Amazon page says every action is reviewed and approved, and another says the agent can act on its own, so check which applies before you switch a workflow on.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/cart-abandonment-benchmark/https://mediovsky.com/cart-abandonment-benchmark/Baymard’s 70.22% is the mean of figures that run from 55% to 84.27%, and most of them are more than a decade old. Your own rate depends on where you start counting, and Google Analytics and Shopify start in different places.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiCROhttps://mediovsky.com/chatgpt-search-fan-out/https://mediovsky.com/chatgpt-search-fan-out/Ahrefs read 66.6 million free, logged-out responses. Nectiv ran about 4,000 prompts through a different model over the API, and the two results describe different products.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/holiday-forecasts-compared/https://mediovsky.com/holiday-forecasts-compared/Adobe, Deloitte, Bain, and Mastercard count different days, different sales, and different dollars. Find the forecast that matches your own report before you set a target against it.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiData & Researchhttps://mediovsky.com/merchant-center-image-quality/https://mediovsky.com/merchant-center-image-quality/Merchant Center’s low image quality issue no longer warns that a product may be kept out of ads and free listings. A separate rule, 500 by 500 pixels from January 31, 2027, still decides whether an image is accepted at all.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/rank-tracker-poisoned-serps/https://mediovsky.com/rank-tracker-poisoned-serps/Nozzle has published a full dataset on what several vendors now report: Google answering suspected bots with a complete, normal-looking page whose results are wrong. Google has not confirmed it, and for one weekend the fallback, Search Console, ran more than 64 hours late.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/safari-27-revenue-exposure/https://mediovsky.com/safari-27-revenue-exposure/The first measured figure is in, the bug that started it is closed, and The Trade Desk is unblocked in a beta. What a publisher stands to lose is three numbers multiplied together, and one of them is still close to zero.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiHow-To Guideshttps://mediovsky.com/tiktok-ad-network-us/https://mediovsky.com/tiktok-ad-network-us/TikTok Ad Network, the renamed Pangle, now lets US advertisers extend campaigns to nearly 400,000 apps. The only test behind the launch page’s lift figures is an internal one from April 2024, and the block list works only if you switch it on in each ad group.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/xandr-grindr-fine/https://mediovsky.com/xandr-grindr-fine/The regulator held Microsoft’s ad exchange jointly responsible as both the seller’s and the buyer’s platform, and said a clause telling the publisher to collect consent is not a check. The 54-page decision answers seven defenses that any intermediary in an ad auction might offer.Tue, 13 Oct 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/ai-overviews-antitrust-ruling/https://mediovsky.com/ai-overviews-antitrust-ruling/A federal court dismissed the Chegg and Penske Media antitrust suits over AI Overviews because an expectation of traffic is not an agreement. On the same day, Cloudflare opened two ways to charge AI companies, and neither reaches the crawler that matters most.Mon, 05 Oct 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/cipa-pixel-lawsuits/https://mediovsky.com/cipa-pixel-lawsuits/SB 690 takes the pen register claim over website and app tracking away from private plaintiffs and reaches back two years. The wiretap section that covers pixels, session replay, and chat tools was not touched.Mon, 05 Oct 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/ga4-ai-assistant-channel/https://mediovsky.com/ga4-ai-assistant-channel/Since May, Google Analytics sorts visits from ChatGPT, Gemini, and other assistants into a default channel of their own. Clicks from AI Overviews and AI Mode are filed under Organic Search by definition, and the tracking parameter that seemed to change that last week came from a browser extension.Mon, 05 Oct 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/google-ai-content-guidance/https://mediovsky.com/google-ai-content-guidance/On October 1 Google added a manual fact-check instruction to its generative AI guidance and put the quality raters’ vocabulary into its helpful content page. The same update names invented author profiles as deception.Mon, 05 Oct 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/safari-ad-tech-block/https://mediovsky.com/safari-ad-tech-block/iOS 27 shipped with a hard block on nine domains, including the one The Trade Desk uses to bid and serve ads. A WebKit commit merged 11 days later turns that fixed list into one Apple’s own service supplies and updates.Mon, 05 Oct 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/adx-interoperability/https://mediovsky.com/adx-interoperability/The court refused to break up Google’s ad tech stack and ordered interoperability instead: AdX bids into Prebid and rival ad servers, exportable data, and a monitor for six years. The order reaches worldwide, and on the buy side it binds Google Ads, not Display & Video 360.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/att-eu-prompt/https://mediovsky.com/att-eu-prompt/From iOS 27.2, apps in Germany, France, Italy, Poland, and Romania can show only Apple’s alternative App Tracking Transparency prompt: a full-page sheet, copy the publisher writes, and an Additional Information button. The rule for when to ask stays exactly where it was.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/chatgpt-ads-measurement/https://mediovsky.com/chatgpt-ads-measurement/OpenAI’s ad platform now has a pixel, a Conversions API, and a reporting API. Its general reports count click-through conversions, its conversion report adds a one-day view window by default, and the pixel assumes consent until you tell it otherwise.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/google-ads-api-access/https://mediovsky.com/google-ads-api-access/Google sunset developer tokens on September 9 and moved each access level to the Cloud projects that had called the API with that token in the previous 90 days. A token that sat idle lost its access, and v22 stops answering on October 7.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiHow-To Guideshttps://mediovsky.com/microsoft-ads-ai-max/https://mediovsky.com/microsoft-ads-ai-max/Microsoft sells AI Max for Search on at least 8% more conversions and prints the experiment behind it: 44 advertiser A/B tests, a 13.6% spend-weighted uplift, and ten significant results. From October 1 it also removes the Max CPC cap from new standalone campaigns.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/muse-agent-checkout/https://mediovsky.com/muse-agent-checkout/Meta’s Muse can buy from eligible Shopify stores without leaving the app, because Shopify switched direct checkout on for them. Amazon went the other way, with terms that make an agent name itself and leave when asked.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/scam-ads-optimization/https://mediovsky.com/scam-ads-optimization/A September 24 notice asks whether the targeting and delivery systems platforms sell to every advertiser are furthering impersonation scams, and whether platforms should have to vet advertisers. Google and Meta are already answering with verification, and legitimate advertisers will feel it first.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/sora-api-shutdown/https://mediovsky.com/sora-api-shutdown/OpenAI gave developers six months’ notice and left the replacement column in its deprecation table empty. Adobe’s own list of retired partner models has ten entries dated April to September, so the pipeline has to be built to outlive the model.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/surveillance-pricing-laws/https://mediovsky.com/surveillance-pricing-laws/A retailer selling in Connecticut may not set a shopper-specific price from personal data, and New York already makes you say so next to the price. Loyalty prices and posted discounts survive, but only when the terms are public and open to anyone who qualifies.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/tag-gateway-uplift/https://mediovsky.com/tag-gateway-uplift/Google put numbers on first-party data plumbing on September 10: 14% more conversions with tag gateway, 11% from enhanced conversions, 26% higher incremental ROAS from Data Manager. Two of the four rest on two-week windows and one on a comparison of two half-years, so read them as signal you get back, not demand you create.Fri, 25 Sep 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/advertising-legal-basis/https://mediovsky.com/advertising-legal-basis/Both the EU and the UK say in their own operative texts that direct marketing may rest on legitimate interests. Neither says it about advertising built on tracking, and the line between them is a balancing test almost nobody writes down.Sun, 13 Sep 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/agent-checkout-failures/https://mediovsky.com/agent-checkout-failures/We read the robots.txt of twenty large US storefronts and asked each one for its homepage twice, once as a browser and once as an agent. The blocking is real, the enforcement sits somewhere else entirely, and the feed underneath never expires.Sun, 13 Sep 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/reddit-ads-performance/https://mediovsky.com/reddit-ads-performance/Two Reddit documents describe the same year. The audited one says the price of ads rose 40%, and the marketing one sells a 17% lower cost per action, measured in split tests that ran in 2025.Sun, 13 Sep 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/retail-media-measurement-gap/https://mediovsky.com/retail-media-measurement-gap/Incremental sales is the metric buyers ask for most, and about two-thirds of networks say they supply it. The industry’s own standard lists four methods behind that one word, and only one of them is an experiment.Sun, 13 Sep 2026 00:00:00 GMTMikołaj SaleckiData & Researchhttps://mediovsky.com/account-audit-method/https://mediovsky.com/account-audit-method/The paid media audit is sold on percentages, and chased to their sources most end at another agency blog. Here are six failures you can prove inside your own account in an afternoon, and the arithmetic that separates a finding from an assertion.Sat, 05 Sep 2026 00:00:00 GMTMikołaj SaleckiData & Researchhttps://mediovsky.com/agentic-commerce-protocols/https://mediovsky.com/agentic-commerce-protocols/Roundups frame agentic commerce as a standards war between OpenAI and Google. Read both specifications and OpenAI’s retreat from Instant Checkout, and the two rails are converging on one journey, asking merchants for the same feed at a cadence the spec never demanded.Sat, 05 Sep 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/ai-max-dsa-sunset/https://mediovsky.com/ai-max-dsa-sunset/Two migration dates are circulating with the wrong campaign types attached. Google’s 7% and the independent 16% come from different verticals, baselines, and years, and the question worth testing is whether the added volume was ever new.Sat, 05 Sep 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/ai-watermark-content/https://mediovsky.com/ai-watermark-content/Claude’s newest models weave an invisible mark into their text, with no documented opt-out. In Anthropic’s explanation the mark measures one thing, how many words the model chose: faint on a proofread draft, loud on prose it wrote end to end.Sat, 05 Sep 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/chatgpt-ads-europe/https://mediovsky.com/chatgpt-ads-europe/The 31 markets that went live on August 24 are exactly the EEA plus Switzerland, the territory OpenAI carved out of personalization. Polish buyers get a contextual product with a 65 PLN daily floor and a CPC figure that is a suggested bid, not a market rate.Sat, 05 Sep 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/multi-market-account-structure/https://mediovsky.com/multi-market-account-structure/Teams running several European markets argue about splitting campaigns per country, and settle it with a number somebody half-remembers. Google publishes it as the sample you need to read a result, not the volume the algorithm needs, and that changes the decision.Sat, 05 Sep 2026 00:00:00 GMTMikołaj SaleckiHow-To Guideshttps://mediovsky.com/account-structure-automation/https://mediovsky.com/account-structure-automation/Thirty conversions a month. Fifty events a week. Every consolidation argument in the industry rests on those numbers, and neither platform states them as structural requirements. Google says something quieter and more useful, and once you read what it actually says, the real cost of splitting a campaign turns out to be arithmetic you can do yourself.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/ai-output-evals/https://mediovsky.com/ai-output-evals/Every team now has models writing, classifying, and summarizing at volume, and almost none can say whether the output got better or worse last month. The fix is an eval: a frozen set of real inputs, a rubric that discriminates, and a threshold. The research on how to build one is unusually clear, and unusually uncomfortable about the shortcut everyone takes.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/ai-traffic-measurement/https://mediovsky.com/ai-traffic-measurement/The slide says AI traffic is up and to the right. Underneath it, some assistants send a referrer and some send nothing, the biggest AI surface of all arrives labeled as ordinary organic search, and the crawler that decides whether you get cited at all is a different bot from the one everybody blocked. Here is what is actually measurable, and what to stop claiming.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/creative-testing-automation/https://mediovsky.com/creative-testing-automation/Two things break creative testing at once: the platform decides who sees what, and almost nobody runs the numbers on how much data a real answer needs. The arithmetic is not close. Detecting a 20% difference takes roughly 400 conversions per variant, and most tests are called at a tenth of that.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/crm-conversion-loop/https://mediovsky.com/crm-conversion-loop/Your sales team knows which leads were worthless. Your ad account does not, because nothing ever told it. Closing that loop is not a reporting project, it is a change to the optimization target, and the hard parts are a seven-day window, a hashing spec the two platforms disagree on, and the double-counting trap nobody warns you about.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/marginal-roas-saturation/https://mediovsky.com/marginal-roas-saturation/The number on your dashboard divides all the revenue by all the spend, which describes money you already committed. The decision in front of you is about the next increment, and that return is always lower than the average and falling. Here is how to find where your curve bends, and what to do at the point the two numbers disagree.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiData & Researchhttps://mediovsky.com/product-feed-targeting/https://mediovsky.com/product-feed-targeting/In Shopping and Performance Max you cannot pick keywords, audiences, or placements in any way that sticks. What decides which auctions you enter is a text file: the title, the attributes, and the labels you put on each product. Here is how the matching actually works, and the one Google rule about AI-written titles that almost nobody has implemented.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/value-based-bidding/https://mediovsky.com/value-based-bidding/Google and Meta will optimize toward whatever a conversion is worth, and they take your word for it. Most accounts send the order total, which is not profit, then set a target on top of a number the business never earned. Here is what to send instead, and the refund pipeline that keeps it honest.Fri, 14 Aug 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/ga4-mcp-api-playbook/https://mediovsky.com/ga4-mcp-api-playbook/The whole path, in order: the Google Cloud project, the credential, the connection, and then the part that actually pays for itself. One scheduled pull becomes a dashboard, a cohort grid the interface cannot draw, a written weekly summary, and a Slack alert that stays quiet until something real moves.Sat, 01 Aug 2026 00:00:00 GMTMikołaj SaleckiHow-To Guideshttps://mediovsky.com/ai-creative-labels/https://mediovsky.com/ai-creative-labels/From August 2, three separate regimes (the EU AI Act, New York’s synthetic-performer law, and Amazon’s marketplace policy) start forcing you to disclose AI-generated creative. The panic that the label tanks conversion is repeated everywhere and proven nowhere. Here is what each rule actually covers, and how to decide where a human face still earns its cost.Tue, 28 Jul 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/google-ads-agent/https://mediovsky.com/google-ads-agent/You can run Google Ads from a terminal now: read the account, draft the change, spend the money, all in plain English. This is the build guide. Which of the four paths to use (scripts, the official read-only Model Context Protocol (MCP) server, a community write server, or the raw v25 API), what v25 quietly broke, and how to wire a write path that fails safe instead of fast.Mon, 27 Jul 2026 00:00:00 GMTMikołaj SaleckiHow-To Guideshttps://mediovsky.com/brand-search-spam-panic/https://mediovsky.com/brand-search-spam-panic/The June 2026 spam update set off a wave of “brands lost their own results” panic. No primary data supports it. What actually got demoted was the coupon and affiliate sludge on your brand-plus-modifier queries, and branded search is the one segment AI Overviews are making stronger.Mon, 20 Jul 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/tymbre-30-day-build/https://mediovsky.com/tymbre-30-day-build/Tymbre went from a clickable mockup to the App Store in 30 days, built by one person after hours, with AI. Here is the full product: 1,116 launch-period commits, a self-hosted core architecture in Warsaw, adversarial QA, and the lesson that the bottleneck was never the typing.Sat, 18 Jul 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/adam-framework/https://mediovsky.com/adam-framework/AI, Digital, Automation, Measurement. Every business already runs on all four, and is fragile in the exact one nobody is watching. ADAM is a diagnostic that plots you on a 4×5 matrix, names your weakest pillar, and forces one decision per quarter. Here is the whole framework, and the free playbook.Mon, 13 Jul 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/claude-code-ad-accounts/https://mediovsky.com/claude-code-ad-accounts/Claude Code already pulls last week’s numbers, drafts the negatives, and stages a budget change across Google Ads and Meta, wired in through the Model Context Protocol (MCP) and the platforms’ own APIs. Here is how the plumbing works, why Google’s own connector refuses to spend a cent, and where the guardrails still have to come from you.Mon, 13 Jul 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/mcp-model-context-protocol/https://mediovsky.com/mcp-model-context-protocol/Model Context Protocol (MCP) turns a large language model (LLM) from smart autocomplete into an agent that can touch your CRM (customer relationship management), analytics, and ad platforms through a single standard. How the handshake works, who adopted it, and the security perimeter it opens.Sun, 12 Jul 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/humans-with-ai/https://mediovsky.com/humans-with-ai/Seventeen percent of chief marketing officers (CMOs) have cut marketing jobs because of AI. Thirty-six percent expect to within two years. The gap between those numbers is where the restructuring is actually happening.Fri, 10 Jul 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/multi-agent-marketing/https://mediovsky.com/multi-agent-marketing/When a single AI agent hits its ceiling, the work moves to a fleet with an orchestrator on top. The 2026 problem is no longer model quality. It is coordination, guardrails, and reliability.Thu, 09 Jul 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/ai-overviews-traffic/https://mediovsky.com/ai-overviews-traffic/AI Overviews sit on nearly half of Google queries by most 2026 counts, and have cut clicks to the top organic result by 58%. The traffic that survives is disproportionately the traffic that was going to convert.Wed, 08 Jul 2026 00:00:00 GMTMikołaj SaleckiSEOhttps://mediovsky.com/incrementality-testing/https://mediovsky.com/incrementality-testing/Last-click and even a mix model can flatter the spend that only harvested demand it never created. Incrementality testing is the causal tie-breaker: geo experiments and holdout lift tests that show which dollar actually caused a sale.Mon, 06 Jul 2026 00:00:00 GMTMikołaj SaleckiData & Researchhttps://mediovsky.com/performance-max-playbook/https://mediovsky.com/performance-max-playbook/Search themes, campaign-level negatives, brand exclusions, and channel reporting quietly turned Google’s most opaque campaign type into a controllable broad-match machine. The controls exist. Most accounts still don’t use them.Sun, 05 Jul 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/ga4-system-of-record/https://mediovsky.com/ga4-system-of-record/Google Analytics 4 (GA4) got good at engagement, e-commerce, and prediction, and stayed bad at pretending to be a database. In 2026 the working setup reads the interface as a privacy-filtered view and moves the source of truth to BigQuery.Fri, 03 Jul 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/retail-media-duopoly/https://mediovsky.com/retail-media-duopoly/US retail media hits roughly $71 billion in 2026, but Amazon and Walmart take nine of every ten new dollars. The channel is huge, growing fast, and more concentrated than any other in digital.Thu, 02 Jul 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/cdp-vs-warehouse/https://mediovsky.com/cdp-vs-warehouse/Packaged customer data platforms and warehouse-native, composable stacks now do most of the same jobs. The real fork is not buy vs build. It is where you put identity and consent, and how fast you need to act on them.Tue, 30 Jun 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/advantage-plus-roas/https://mediovsky.com/advantage-plus-roas/Meta made Advantage+ the default and lowered the bar to use it. The performance lift is real. But the number it reports is blended, and the control you give up is not. Here’s how to run it without fooling yourself.Sun, 28 Jun 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/ai-operating-model/https://mediovsky.com/ai-operating-model/In 2026 the marketing teams pulling ahead with AI are not the ones with the most tools. They are the ones that redesigned how the work is done, who decides, and how the payback gets proven.Fri, 26 Jun 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/amazon-seller-fees/https://mediovsky.com/amazon-seller-fees/Amazon called its 2026 fee change slight, and for one unit it is. The real cost of selling on Amazon and Walmart sits underneath it: a stack of fulfillment, storage, and ad charges that turns a 6-15% referral into something operators put near 30-40% of gross merchandise value (GMV), and each platform hurts in a different place.Wed, 24 Jun 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/programmatic-dooh/https://mediovsky.com/programmatic-dooh/In 2026 the billboard reports back. Programmatic buys the majority of digital out-of-home, measurement moved from impressions to incrementality, and outdoor screens now compete for performance budgets, not just awareness lines.Mon, 22 Jun 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/ctv-budget-gap/https://mediovsky.com/ctv-budget-gap/Streaming is now nearly half of US TV viewing, but connected TV still draws only about 8% of ad spend. The gap is the last piece of underpriced reach in video, if you can survive the measurement and frequency chaos to claim it.Sat, 20 Jun 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/email-lifecycle/https://mediovsky.com/email-lifecycle/Gmail and Yahoo turned deliverability into the price of entry, and behavior-led flows now compound where broadcast sends stall. What actually moves email revenue in 2026, and what to distrust in the return-on-investment decks.Wed, 17 Jun 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/generative-engine-optimization/https://mediovsky.com/generative-engine-optimization/Generative engine optimization isn’t SEO with a new coat of paint. It’s writing for extraction (answer-first, evidence-dense, cleanly structured) so ChatGPT, AI Overviews, and Perplexity pick you as the source. This piece is built the way it tells you to build.Tue, 16 Jun 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/affiliate-incrementality/https://mediovsky.com/affiliate-incrementality/Pay 10% on every affiliate sale and a chunk of those buyers were coming anyway. The 2026 shift is away from coupon volume toward deeper partnerships, but the number that decides whether the program pays is the one nobody prints on the invoice.Sun, 14 Jun 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/server-side-tracking/https://mediovsky.com/server-side-tracking/Client-side tracking now loses 20-40% of events, more in Safari-heavy markets. Server-side tagging recovers a real chunk of it, but it’s infrastructure with a bill and a consent trap, not a plugin you switch on.Fri, 12 Jun 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/consent-mode-conversions/https://mediovsky.com/consent-mode-conversions/Google Analytics stops reading its own ad settings and hands the entire decision to Consent Mode. If your consent management platform (CMP) wires the wrong signal, EU conversions and remarketing quietly fall off, and Analytics will still look fine.Wed, 10 Jun 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/ad-ops-agents/https://mediovsky.com/ad-ops-agents/AI agents already run bidding, budget shifts, and creative rotation end to end. But 2026 is the year of assisted autonomy: humans on the guardrails, not off the loop. The gap between those two things is where accounts get wrecked or saved.Mon, 08 Jun 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/programmatic-ad-tax/https://mediovsky.com/programmatic-ad-tax/Independent audits keep finding the same thing: only about half of a programmatic display dollar reaches the site that ran the ad. The rest is the ad tech tax, and in 2026 the way to claw it back is structural, not another blocklist.Sat, 06 Jun 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/linkedin-ads-cpc/https://mediovsky.com/linkedin-ads-cpc/Published 2026 benchmarks put LinkedIn cost per click (CPC) anywhere from $5.58 to $10.11, and as high as $15.72 in peak quarters, with cost per lead (CPL) from $15 to $350. The spread isn’t noise. It’s the whole game. Plan to the range that matches your audience, not the headline that matches nobody’s.Thu, 04 Jun 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/n8n-make-automation/https://mediovsky.com/n8n-make-automation/The 2026 workflow-automation choice is not really n8n versus Make. It is knowing which marketing tasks belong to a no-code canvas, which need real code, and which should stay in a human’s hands.Tue, 02 Jun 2026 00:00:00 GMTMikołaj SaleckiMarTechhttps://mediovsky.com/marketing-mix-modeling/https://mediovsky.com/marketing-mix-modeling/Privacy killed the click-level view, and marketing mix modeling (MMM) returned to fill the hole. But the brands getting it right don’t run MMM instead of attribution. They run three layers, each doing the one job it’s actually good at.Sat, 30 May 2026 00:00:00 GMTMikołaj SaleckiData & Researchhttps://mediovsky.com/rag-marketing/https://mediovsky.com/rag-marketing/Retrieval-augmented generation is how you stop a large language model (LLM) from inventing your product facts. In 2026 the work is a governed pipeline, not a prompt, and the payoff is brand-safe content and support you can actually audit.Thu, 28 May 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/tiktok-shop/https://mediovsky.com/tiktok-shop/US TikTok Shop is forecast at $23.4 billion in 2026, bigger than Target’s or Costco’s e-commerce. But the top 1% of sellers drive about 60% of that, and half the headline stats are forecasts and second-hand claims. Read it with both eyes open.Tue, 26 May 2026 00:00:00 GMTMikołaj SaleckiE-Commercehttps://mediovsky.com/prompt-engineering-skill/https://mediovsky.com/prompt-engineering-skill/The standalone “prompt engineer” role is fading, but the competency is now baked into marketing operations. What survived is not clever wording. It is structured prompting, real context, and prompts you actually test.Fri, 22 May 2026 00:00:00 GMTMikołaj SaleckiAI & Datahttps://mediovsky.com/google-ads-scripts/https://mediovsky.com/google-ads-scripts/Google Ads scripts still earn their keep in 2026 doing deterministic, boring work: budget alerts, zero-conversion flagging, out-of-stock pausing. AI can now draft them from a sentence. The judgment about the rules is still yours, and that’s the whole point.Wed, 20 May 2026 00:00:00 GMTMikołaj SaleckiHow-To Guideshttps://mediovsky.com/retargeting-post-cookie/https://mediovsky.com/retargeting-post-cookie/Third-party cookies stopped carrying your retargeting a while ago. The value moved to first-party audiences, server-side signals, and the automation layers inside Meta and Google. Here’s what to keep funding and what to quietly cut.Sun, 17 May 2026 00:00:00 GMTMikołaj SaleckiPPChttps://mediovsky.com/brand-vs-performance/https://mediovsky.com/brand-vs-performance/The most cited number in marketing came from analyzing 996 campaigns and taking the mean. It was never a law, and applying it to a three-year-old brand burning runway is how good research becomes bad strategy. The rule is real. The dogma is the problem.Thu, 14 May 2026 00:00:00 GMTMikołaj SaleckiDigital Marketinghttps://mediovsky.com/ecommerce-ai-cro/https://mediovsky.com/ecommerce-ai-cro/The average e-commerce conversion rate is somewhere between 1.4% and 2.96%, which tells you almost nothing. AI personalization is a real lever, but the honest number is a 10-30% relative lift, not the miracle in the case study. Here’s where it actually shows up.Sun, 10 May 2026 00:00:00 GMTMikołaj SaleckiCRO