google panda is a change to google search engine ranking that filters all low quality content sites to lower ranking and returns the high quality content sites to top ranking.
Google panda update is a big change in feb 2011.

Google’s Panda Update is a search filter introduced in February 2011 meant to stop sites with poor quality content from working their way into Google’s top search results. Panda is updated from time-to-time. When this happens, sites previously hit may escape, if they’ve made the right changes. Panda may also catch sites that escaped before. A refresh also means “false positives” might get released.

Google is search engine we all know this and it works on certain algorithm or you can say set of rules. Few website owners to precise SEO companies have got that Algorithm and they are working against it means they don't have good content on there website but they are just following the rules of Google's algorithm to be on the top of search and most of them are having advertisement only like songs.pk which is known website for downloading MP3 songs. If you will search MP3 songs it will reflect on the top of search but once you will click on that you will see a lot of advertisement and the most important thing you will get some misleading advertisement as well. So in order to avoid this and get good website on top, Google has designed an artificial intelligence tool named panda which was introduced by Google on February 2011 and they have released several update for this as well. Now Google have designed all this just because there user may get good search result.


Thanks to Google!!

..~~The Google Panda update was first launched with the goal of lowering the ranks of websites that include duplicate content, low-quality and keyword stuffed articles, and copied content from other websites. That’s why content farms were hit the hardest when Panda was first launched because they produced articles were submitted or rewritten multiple times just to obtain links. On the other side of the coin, Panda gives higher rankings to high-quality websites. Google defines high quality websites as those that provide original content, offer more in-depth research, and provide deep analysis reports.

Then we are having more recent update too i.e., Google Penguin,it targets websites that are belied to be violating Google’s existing quality guidelines. Penguin reduces the ranks of sites that use spamming to obtain higher ranks on search results. Black hat tactics, including keyword stuffing, unnatural inbound links, and comment spamming in blogs with the exact anchor test for targeted keywords, are all penalized by Google. Even websites that have low-quality directory listings and marketing are also flagged by Google, and their rankings are demoted in search results..~~

@Nakul,
Google is search engine we all know this and it works on certain algorithm or you can say set of rules. Few website owners to precise SEO companies have got that Algorithm and they are working against it means they don't have good content on there website but they are just following the rules of Google's algorithm to be on the top of search and most of them are having advertisement only like songs.pk which is known website for downloading MP3 songs. If you will search MP3 songs it will reflect on the top of search but once you will click on that you will see a lot of advertisement and the most important thing you will get some misleading advertisement as well. So in order to avoid this and get good website on top, Google has designed an artificial intelligence tool named panda which was introduced by Google on February 2011 and they have released several update for this as well. Now Google have designed all this just because there user may get good search result.

Thanks to Google!!

Its a filter which is used to return higher-quality sites near the top of the search result and reduce the poor quality from top.

Google Panda Update is a filter introduced in February 2011 meant to stop sites with poor quality content from working their way into Google’s top search results.

Please define...