Facebook has just released a new search engine "Graph Search' . Essentially, this searches within your 'friends' (connections with Facebook) for data that can help your answer your questions, such as 'name me a qood restaurant liked by my friends".
But how does this compare to how the likes of Google searching works? How Google works in detail is a bit of a black box, but it is thought that websites(which are posted in a response to query) are ranked based on connections to other websites, among many other factors. In contrast, Graph Search from Facebook is based on connections between people to answer queries, and not websites. But Google is interested in connections between people as well, which is one of the reasons why they introduced Google +, as they helps provide them with data showing connections between people.
And this explains our interest in the new Facebook search engine - our new patent search engine AmberScope.com is based on (citation) connections between patents. These connections are used to identify similar patents, and rank the relative importance of these patents within their technical field.