Google Panda was an algorithm update by Google to filter low quality sites and spam. It was a site wide penalty to remove poor quality content from Google search engine results pages (SERP) to improve the relevancy of search results. Some of the popular brands like About.com, Associated Content (by Yahoo!), Demand Media, Article Directories and thousands of other websites were negatively affected by Google Panda Update.
What is Google Panda Update?
“We actually came up with a classifier to say, okay, IRS or Wikipedia or New York Times is over on this side, and the low-quality sites are over on this side.” – Matt Cutts
The first Google Panda Update was on February 24, 2011 which targeted content farms (sites with poor content) and the latest Panda Algorithm Update was on June 25th which was simply a basic data refresh where they ran the algorithm again.
[Infographic by: Single Grain]