Google Inc. have rolled out it's “+1” button for websites, allowing users to recommend things to their contacts and friends.
Sites that you've “+1” will appear more prominently in your friends’ search result (implying you have friends), provided that your pals have +1 enabled and are have login to their Google accounts.
The button already is available on sites like Mashable and the Huffington Post.
Google’s +1, however, is a little different. Instead of focusing on a separate social network like Facebook's "Like" button that is everywhere in the internet, it is geared toward search, which is the thing Google does best (and adSense). Because Page Rank is crucial to websites, webmasters
The Twitter “follow” button, on the other hand, is a service to get more novice interweb users to be sucked into Twitter. If website readers see that they can use Twitter to get more information from their favorite actors, they might be more likely to get on board the Tw@ter.