In a blog post today, The Bing Team has announced that Facebook Like results for any of the URLs returned by the Bing algorithmic search results will now be included in US search results:
If your friends have publicly liked or shared any of the algorithmic search results shown on Bing, we will now surface them right below the result.
Of course for this to work you have to have a couple of things going, including having a US set computer, having connected Bing with Facebook, and having friends who are also using Bing and in the habit of “Liking” search results:
If you have all of that going for you, when you perform a search on Bing, any “Liked” results will show up in the results: 
Bing has been working closely with Facebook for a number of years, first providing search capabilities within Facebook, and last October announced the partnership that led to today’s announcement.