Microsoft has rolled out some major updates on their Bing search platform.
They have integrated Facebook deeply with the overall search experience.
You can basically ask questions about something you are searching right from Bing.com.
Bing would also suggest your friends who might know something about your query based on what they have shared on Facebook in the past.
So basically, Bing search results are largely divided into three columns. Left column shows the regular web results. Middle column shows semantic data like maps and ads. The right column is the Facebook bar for interacting with your friends.