Penguin 2.0 rolled out on May 22, 2013
According to Matt Cutts, Google started rolling out the next generation of the Penguin webspam algorithm on
May 22, 2013, and the rollout is now complete. About 2.3% of English-US
queries are affected to the degree that a regular user might notice.
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Penguin 2.0 rolled out,
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