Research dispatches

Field notes from the marketplaces.

Long-form research on algorithm shifts, category dynamics, and seller tactics — measured against our panel of 18,000+ listings. Published weekly, free to read.

Algorithm·May 24, 2026·4,800 words

The A10 algorithm, after Amazon's quiet May rewrite

Three weeks of behavioral data from 18,000 listings, before and after. The relevance signal lost weight; behavioral velocity gained it.

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