Facebook launches world biggest social search engine. Mark Zuckerberg (CEO Facebook) unveiled this social search feature which is designed to get more surfing time of the users on Facebook. Entering into search engine module Facebook also challenged Google and other rivals such as Yelp and LinkedIn.

The new service from Facebook is called “graph search, unveiled Tuesday 29th Feb 2013 lets users quickly sift through their social connections for information about people, interests, photos and places. It’ll help users who, for instance, want to scroll through all the photos their friends have taken in Paris or search for the favourite TV shows of all their friends who happen to be doctors.