Google Panda was released in February 2011 first time. It is basically a change in Google Search Results Ranking of all websites. This algorithm has changed the search result rank according to low-quality and high-quality sites. According to experts, there was some increase in rank of social networking sites and news sites and decrease in the sites which has large number of Ads, in result of this algorithm. The first Google Panda updates effect the 12 % of all search results. Google Panda established to protect the copyright of publisher as many scrapers have taken place in the cyber world who copy the data from different websites and publish it to their blog/site with their name and were eating the rights of the real publishers and getting batter search results. When Google Panda roll-out first time, many websites including Google Webmaster Forum has filled with complains against the scrapers that they are getting better rank as compared to the sites with original contents. So Google Panda updates time to time and the globally affect was achieved in April 2011. By the way of help to affected publishers, Google has provided an advisory on its blog where it has provided some help for self-evaluation of website's quality. Google has listed round about 23 points answering the question of "What counts as a high-quality site?". This may will provide some help for webmasters.

Google Panda was created with the help of algorithm updates. This algorithm uses artificial intelligence in more scalable and better way than that of all before. Before it, the human quality persons ranked and rated thousands of websites according to speed, design, trustworthiness and internal links. Then the new Google Panda machine-based algorithm was used to check the quality on the basis of similarities of websites which was founded by people on the base of high quality and low quality. On the result of Google Panda algorithm, many new ranking factors have been created, because of it the older ranking factors like PageRank have been decreased in importance. Google Panda Algorithm is run by Google on regular basis.

Last Google Panda 3.92 updated on September 18, 2012 and it effected about 0.7% of all queries.

Google Penguin Algorithm was first released on April 24, 2012. The aim of this algorithm was also to decrease the site in search raking those use clocking, participate in link schemes, use keyword stuffing and create duplicate content as well as violate the Google Webmaster's Guideline.

According to google, this algorithm effected about 3.13% search queries in English and about 3% in language like Chines, Arabic and German and very large percentage in the language considered as "Highly-Spammed Languages". Google Penguin 1.1 updates was announced on May 25, 2012. This updates effected  less than 0.1% of English search queries. The principle of this update was to penalize the website that use underhand technique to get high rank. Google Penguin 3 was announced on October 5, 2012 and affected 0.3% queries.

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