A New Tool Aims to Help Facebook Users Dig Deep - NYTimes.com

A search for "My friends who like Facebook Graph Search" this morning returns "Sorry, we couldn't find any results for this search."

"On Monday, the company will roll out the feature to its several hundred million users in the United States and to others who use the American English version of the site. Other languages will follow.
Developing a sophisticated search feature is vital to Facebook’s long-term success, both to deepen users’ engagement and to make it more appealing to advertisers.
Experts say that Facebook’s technical achievement so far is impressive. Privacy could still be an issue, however, as more user data becomes easily accessible. Also, the feature is dependent on Facebook users volunteering more information about their likes and dislikes."

A New Tool Aims to Help Facebook Users Dig Deep - NYTimes.com