Topix.net - A Concept Based News Portal?
Just came across an article describing Topix.net - a site that automatically classifies news stories according to their topics. Another major feature seems to be the integrated background knowledge about US geography. Search for Springfield to understand what I mean: not only does the system ask for a disambiguation about which Springfield you mean, but it also offers a list of "Nearby Cities".
Tags: Artificial Intelligence, Topix