Facebook uses Bing to power search, but Nick O'Neill tells us about six other search engines that support search for the social networking site. O'Neill serves up a list of some of the engines he calls the best,as well as points to the features that make them special. For instance, the search bar Greplin will let Facebook members pull up everything on the network surrounding specific terms. The tool will search and aggregate results from all the social networks to which the user connects.
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