Google confirms that a new version of its Penguin filter aimed at fighting spam went live on Friday
Google has confirmed to Search Engine Land that it updated its Penguin filter on Friday. Penguin targets sites deemed to be spammy, especially those found in violation of Google’s guidelines about linking.
Some noticed major changes in Google search results beginning late Friday night US time and speculated that this was due to the long-awaited Penguin Update that Google had said to expect this month.
Google verified to us today that this has happened, when we asked about it. Google hasn’t yet given more details on the percentage of search results the latest version of Penguin has impacted or if there were any major changes made to it since the last release. We’ll update if we get these details.
Penguin Releases Over Time
This is the sixth release of Penguin. Google itself hasn’t given it a number, but we’re calling it Penguin 3.0 because it’s been so long since the last release of Penguin that it’s worth counting as a major release.
Here are dates of all Penguin releases:
- Penguin 1.0 on April 24, 2012 (impacting ~3.1% of queries)
- Penguin 1.1 on May 26, 2012 (impacting less than 0.1%)
- Penguin 1.2 on October 5, 2012 (impacting ~0.3% of queries)
- Penguin 2.0 on May 22, 2013 (impacting 2.3% of queries)
- Penguin 2.1 on Oct. 4, 2013 (impacting around 1% of queries)
- Penguin 3.0 on October 17, 2014 (impact not yet released
Note that Penguin 1.1 and Penguin 1.2 were previously reported by us as Penguin 2 and Penguin 3, because Google itself hadn’t given them numbers, so we did. But when the fourth release happened, Google declared that to be Penguin 2.0.