On December 21, Google announced another Panda data refresh, affecting nearly 1.3 percent of English queries. The tech giant unveiled the update via Twitter, confirming a change in the algorithm that many in the industry had already noticed.
The Panda algorithm is designed to assess website quality, which means low-quality sites get punished with low rankings while high-quality sites are rewarded with higher search engine rankings. So if your site still features duplicate content or articles with spelling and grammatical errors, consider this update another consequence of disobeying Google’s Webmaster Guidelines.
Google unveiled the Panda algorithm in February 2011; the most recent data refresh is the tech giant’s 23rd update to the algorithm, according to Search Engine Land, and the company has no plans to stop launching more updates anytime soon.
Read more:
http://searchengineland.com/official-google-panda-update-23-impacting-1-3-of-queries-143271