Last month, Bing and Facebook joined forces to bring some new social search features into the Bing search engine.
Today, this is now live for US customers, with rollouts globally over the next few months. This update allows users to sign in to the Facebook accounts within Bing and get a more personalised search service as a result. The first of these new services is Liked Results, which shows you relavant links to your search that are also liked by your friends in Facebook.
For more details on the other elements in social search you can read the full article over on liveside.net