Article Photos: Facebook unveils social search feature 9/9

Facebook CEO Mark Zuckerberg, second from right, speaks with Director of Engineering Lars Rasmussen 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)