Today’s Bing news is very interesting, not because the new functionality that Microsoft and Facebook announced is terribly powerful, but because it demonstrates how the next great evolution of search will occur. In brief, Bing announced two new ways it is introducing social data into its search results:
Enhancing results with Facebook Likes: If you search on Bing and your Facebook friends have "liked" something related to your search term, you will see those "likes" highlighted within your search results. The idea behind this functionality is that something your friend "likes" will be more interesting to you than other search results.
Facebook profile search: Bing reports that more than 4% of searches are for people. Of course, trying to find a particular Bob Smith can be a challenge, which is why Bing will utilize your Facebook network to help you find the Bob Smith that is most likely the one you seek.