Have you noticed how you can sign into Facebook and get socially relevant results in your Bing search engine results side bar? Or, at least you can find out which ones of your friends are talking about what you are looking for. The theory being, maybe they have an answer to your question.
Today I tried out this feature and it seems similar to Google's social search results which are based on your Google + circles. Obviously, the two sites are copying each other.
I like the "ask friend's" search bar. Also, I wish they'd quoted something from a friend's post at the top (or side bar) of search results (like you would find with Google, when signed in).
But all that was listed were friends who 'liked' that topic on Facebook or talked about it.
Have you used this feature where you connect your Facebook to Bing to enrich your search experience?