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Google made a significant change in Google’s search results ranking algorithm that was first released in February 2011 and named as “Panda”. The change targeted to lower the rank of low-quality sites, and reward high quality websites with top results. CNET reported a significant change in rankings of top level news  websites, and steep fall for websites with advertising. This change impacted 11.8% of total search ranking results. Soon after first Panda roll out, various seo forums, including Google webmaster forum, flooded with complaints for high rankings of scrappers website than sites with original content.

The impact was so serious that Google asked for data points to detect those websites and penalize manually. Google gave various updates after the first roll-out in February 2011, and went global in April 2011 affecting rankings worldwide. Google also shared 23 bullet points in his official blog, “what makes a website as high quality ? to help webmaster “think like Google “. Since then, there has been 23 more Panda updates, where Google has refined this algorithm and punished more websites, last being in January 2013. – See more at: http://seo.braintechnosys.com/google-panda-update-2011.html#sthash.RVYWESqb.dpuf