Google revealed they are placing users in two different algorithms when performing searches. One is the normal or “control” algorithm and the other is the “test”. If a user gets different results than normal the chances are he/she just got to experience the test algorithm. The video above and the analytical article that can be found over at this link: http://bit.ly/bQq3T6 show an incredibly interesting perspective towards improving the over all search experience for users.
Not only is Google now limiting the influence of the Page Rank algorithm, in its place Google is now taking into account the number of times an article has been shared on various different social networks. Watch the video for complete details, and read the above linked article for an interesting analysis on the issue.