+1 Button by Google
Google is trying hard to keep in pace with facebook. They know that facebook can be a potential google killer. The time can come, where in a facebook search would replace a google search. In one of the latest attempts to counter facebook, Google has launched a +1 button.
The so-called “+1″ button will start to appear alongside Google search results for select users from Wednesday, letting people recommend specific search results to friends and contacts by clicking on that button. It’s not exactly sure whether this feature would influence the search rankings or the algorithm.

You can join the Google +1 experiment by visiting the link http://www.google.com/experimental/
According to Google
Use +1 to give something your public stamp of approval, so friends, contacts, and others can find the best stuff when they search. Get recommendations for the things that interest you, right when you want them, in your search results.
+1′s are public. They can appear in Google search results, on ads, and sites across the web. You’ll always be able to see your own +1′s in a new tab on your Google Profile, and if you want, you can share this tab with the world.
Watch this youtube video for more
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