Panda update — first rolled out February 24, 2011; targeted thin/duplicate/low-value content; affected 11.8% of US English queries
Summary
Claim: Panda first rolled out February 24, 2011 in the US, expanding to all English results April 11, 2011. It targeted thin, duplicate, low-value "content farm" pages and affected 11.8% of US English queries per Google's own estimate (reported by Danny Sullivan / Search Engine Land). Eventually folded into the core algorithm by 2016.
Source: Search Engine Land — Panda announcement coverage, Feb–April 2011.
Confidence: Verified.
Why this matters for Candid: Set the precedent that thin, templated, generic content can sink a site. Direct ancestor of the Helpful Content Update (August 18, 2022) + E-E-A-T extra "E" for Experience (December 2022) + folded into core (March 2024); Google said the changes aimed to cut low-quality unoriginal content by 45% regime that defines today's content bar.
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- reference Research brief: How businesses got found on the web — a then→now timeline (Google-focused, SMB lens, June 2026) relates-to
- reference Helpful Content Update (August 18, 2022) + E-E-A-T extra "E" for Experience (December 2022) + folded into core (March 2024); Google said the changes aimed to cut low-quality unoriginal content by 45% relates-to
- reference The recurring pattern: every major Google shift changed what got surfaced; early adapters captured the new surface, laggards lost the old one — and the pattern is repeating now with AI answers depends-on