SEO information

Timeline of Google Search

"It’s Panda Update 2.1, Not Panda 3.0, Google Says". Search Engine Land. Retrieved February 2, 2014.  Schwartz, Barry (May 9, 2011). "Google Panda 3.0"

history-of-panda-google-algorithm-updatesHistory of Panda Google Algorithm Updates
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Google panda is a change to Google’s search results ranking algorithm that was first released in February 2011. We have listed the major algorithmic changes that have had the major impact on search.