Factery has developed FactRank technology to mine real-time feeds and web content for the purpose of providing simple, short answers to user queries. You decide the sources to use. You can search Twitter, Digg, or a standard search engine.
Life on the web is full of search terms and human filtering. Even good results often require some effort to determine which has the information we seek. There are several services attempting to help with this problem and they're making their applications available via API.
Factery is a search API with a twist. Instead of links, it returns facts. Actually, it returns links, too. But the real interesting stuff is that it extracts the sentence or two that best answers a user's search.