January 15, 2013
Facebook CEO Mark Zuckerberg answers questions after speaking at Facebook headquarters in Menlo Park, Calif., Tuesday, Jan. 15, 2013. Zuckerberg introduced “graph search" Tuesday, a new service that lets users search their social connections for information about their friends’ interests, and for photos and places. (AP Photo/Jeff Chiu)
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Facebook CEO Mark Zuckerberg unveiled a new search feature that's designed to entice people to spend more time on its website and will put the social networking company more squarely in competition with Google and other rivals such as Yelp and LinkedIn.