Quarrybank finds the winnable gaps your affiliate site can actually rank for, checks whether you can get cited in AI Overviews, and produces honest reviews that survive algorithm updates because the quality gate strips out the padding reviewers usually leave in.
Every major Google update of the last three years has punished the same type of content: thin reviews, lists padded to hit a word count, "best X" pages that do not actually test anything. The sites that survived, or recovered, shared one trait: they had something real to say and said it concisely. The new pressure is AI Overviews. If Google surfaces a summary box before the organic results, affiliate clicks drop. The sites getting cited inside those boxes are not the ones with the highest domain authority. They are the ones whose content answers the question precisely in the first paragraph, cites a specific figure, and does not hedge everything into uselessness. Quarrybank scores for both: can this gap be ranked, and is the topic the kind of commercial query where you can win a citation? That combination is what makes SEO for affiliate sites work in 2025 and beyond.
Radar scores commercial queries by difficulty and intent, so you target the gaps a newer or mid-authority site can actually win rather than the ones that look big on paper.
Kenneth checks whether a topic is being cited in AI Overviews and what the cited content looks like, so you can write to that standard rather than guess at it.
The quality gate enforces answer-first structure, no padding, and real specifics. Reviews that pass it read like a person who actually used the product, which is what Google's helpful-content systems look for.
a month to run the data layer per site, versus a tool stack that climbs past £560
to quality-check a full review through the gate
Seam, Mill and Reserve. One niche site or a whole portfolio, the tier fits.
Founding members get the toolkit, the quality gate, and a setup call at founding pricing for life. If you want to understand the broader strategy, read what a content moat actually is or see how publishers use Quarrybank.
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