Microsoft has reconfigured its relationship with Facebook, announcing it will no longer sell display ads on the social networking site, handing that responsibility back to Facebook. The company will however expand its search ad deal with the site, with Microsoft's Bing acting as the default search engine for all of Facebook. Currently, Bing acts as the default search engine in the US only.
The Bing brand will also reportedly receive more prominent positioning on the social site, which may help the search engine claim the attention of some of Facebook's users.
Microsoft says that it will “soon provide Facebook users with a more complete search experience by providing full access to great Bing features beyond a set of links.” In its current incarnation, it's very hard to tell that web search results on Facebook are coming from Bing; results appear as a drab list of links—and the line “powered By Bing” appears to be in size 6 font. Any changes that would actually play up “Bing features” could potentially have a notable impact on Bing adoption, considering that Facebook now claims 400 million monthly users.