OpenCalais classifier
From WandoraWiki
OpenCalais classifier takes a text fragment and creates a topic for it, and associates created text topic with keywords given by OpenCalais web service. The effect is that given text is tagged with certain topics found in the text.
Wandora's OpenCalais classifier starts with File > Extract > OpenCalais classifier.... Classifier can read given file, URL, or plain text.
Wandora's Firefox plugin can also access the OpenCalais classifier. You can send complete WWW page or just WWW page fragments to Wandora for OpenCalais classification while browsing the web.