The hottest debate raging on presently among webmasters is the pros and cons of the new Google Caffeine, which is being claimed to be a better search index, capable of providing fresher search results than the Google's previous index, and also to deal with the vast information being added constantly in social portals like Facebook and Twitter. SEO pros have a challenging task ahead of them, in order to orient their search engine optimization strategies to suit the new search parameters of the new Google Caffeine search engine index. Please leave your comments and opinions over here. Thanks a ton! Hope you participate!

This is a very old news dude, After that Google released search category and than panda also released so, keep your self updated.

Mike say right now Google panda not a caffeine.

Google Caffeine is an "under the hood" development in the Google search engine algorithm that will augment (slightly) how sites rank on Google's search engine results pages (SERP). The addition of Google Caffeine means that your current website search engine optimization (SEO) may become less effective and you may lose or gain position in search engine results for certain keywords. Google Caffeine is not yet integrated into the standard algorithm, but you can observe where your website and other websites stand in 'Caffeine-induced' results by visiting the Google Caffeine test site, http://www2.sandbox.google.com/