This will be a great update since lsat 2005 Google algo updates. They are saying that it will be less important to have internal links and social media will play a great significant role in top keywords rankings. Simply 500+ Digg towards a site means - more trust - more traffic and top rankings Let's see!!
Its the current Google algo adjustment, its suppose to be live at one data center and will be going live after the first on more data centers.
I'm excited about this, I think and hope it will be a positive change, I'm glad I have been working with a lot more social media lately.
Google Caffeine is the new Google's search engine - yet to launch actually. Even after its launch, the search engine will be same as Google but the algorithm behind will be Google Caffeine's.. Google Caffeine will be more powerful, more speed, more accurate than Google.. I suggest you to read this article for more details: Caffeine – Google’s Grand Future
Check this website you will find basic information about Google Caffeine http://www.squidoo.com/what-is-google-caffeine
you can read this Google Post to get more information: http://googlewebmastercentral.blogspot.com/2009/08/help-test-some-next-generation.html
An updated version of Google that has an additional ranking factor that ranks a site in part by it's page load time.