Facebook Shows Its Cards With Bing on Ad Strategy: Full House
By increasing the capabilities of the on-site search, Facebook is hoping to become your one and only portal to the web. If Facebook can get its users to perform on-site searches, it can not only keep you on the site longer, but like Google, it can gather even more information about its users through their searches. This stuff is advertising gold.
via readwriteweb.com
they do have a bit of traffic but I have to say I never searched for anything other than people on Facebook.
