Facebook Graph Search
A search engine from Facebook that enables users to tap into the social network's vast database of information using natural language search phrases and terms. Facebook Graph Search gets its name from a blend of the terms social graphs and search engines, such as those made popular by companies like Google and Yahoo.
Facebook Graph Search uses proprietary algorithms that rely on the connections of a searcher's network of Facebook friends and the content they have liked and shared, and a natural language processor makes it simple for Facebook to input natural language search queries to access customized Graph Search results.
The privacy-aware search functionality in Facebook Graph Search returns results that are highly personalized and unique for each Facebook user. In addition to tapping into the social network’s own database of information, Facebook Graph Search also incorporates search results from Microsoft Bing in its searches, and it pulls relevant information from Wikipedia as well.
Facebook Graph Search debuted in early 2013 and is currently in private beta release, with the functionality expected to be slowly rolled out to Facebook users on a gradual basis.