Google panda is a new algorithm that works against the website that contains low quality articles,blog and simply copy and paste the description from other website to their website to increase the search engine rankings.
Google panda is latest updates by Google to prevent duplicate of content or you can say to stop content farming who are just copy and paste the content from other websites.
Google Panda is the latest update in the algorithm where it is capable of detecting the duplicate content and show drastic changes in SERP's for those having duplicate content. http://www.techendeavour.com/Strategic_Mobility_Consulting