• Penguin 1 on April 24, 2012 (impacting ~3.1% of queries)

• Penguin 2 on May 26, 2012 (impacting less than 0.1%)

• Penguin 3 on October 5, 2012 (impacting ~0.3% of queries)

• Penguin 4 on May 22, 2013 (impacting 2.3% of queries)

Penguin 4

After The first release, the Second and third were just data Refreshes with only minor changes but this Fourth release is a major change so may be your website ranking got slapped check your keyword ranking today.

Penguin 4 has a twist. It contains Penguin 2.0 technology under the hood, which Google says is a new generation of tech that should better stop spam.

Matt Cutts, the head of Google’s Web spam team, announced the new Penguin 2.0 update during This Week in Google (Episode #199). He referenced the earlier video of himself talking about the next generation Penguin update, and said this is being rolled out “within the next few hours.”

Webmasters and SEOs: expect major changes to the search results. Matt specifically said that 2.3% of English queries will be noticeably impacted by this update.

Cutts later posted more details about this roll out on his blog. He explained that the launch is now complete, including for non-English languages, and that “the scope of Penguin varies by language, e.g. languages with more webspam will see more impact.”

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