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Notes on keeping an ad stack alive.

Short, practical posts for publisher ad ops: what to check when revenue moves, what the reports do not tell you, and the files and tags that break quietly.

A strip of paper receipts pinned to a wall, each printed with a rising line, and the last one slipped off its pin with its line falling.

Incidents · Oct 11, 2026 · 5 min read

Why did my ad revenue drop? A 20-minute checklist for Google Ad Manager

Revenue down in Google Ad Manager and nobody knows why. Here is the order to check things in, from report lag to a missing tag, so you find the cause before lunch.

A velvet-rope stanchion next to a lectern holding a paper guest list, with one line struck through in blue pencil.

ads.txt · Oct 11, 2026 · 4 min read

ads.txt 1.1 explained, with the OWNERDOMAIN and MANAGERDOMAIN mistakes that cost you demand

What the two ads.txt 1.1 lines do, where they go, how buyers use them with sellers.json, and the five errors that make demand partners quietly stop bidding.

Four thin blue picture frames in a row on an off-white gallery wall; the third is empty, with only its hook and a dust outline.

On-page monitoring · Oct 11, 2026 · 4 min read

How to know when your ad tags stop loading, before the month-end report does

GAM reports cannot see a page that never asked for an ad. Here is what to check on the page itself, the three signals that catch a broken ad script within the hour, and a release checklist.