I have just found out about a very cool project that makes use of the Topicalizer API called FeedBlast. The detailed concept is described under
http://www.rndparty.com/
The basic idea is to take RSS feeds, have them analysed via Topicalizer and to create an audio / video summary from the input. For this purpose an AT&T text-to-speech software will be used to read out the abstract created by Topicalizer. Moreover, the keywords provided by Topicalizer are used to find media items that fit the RSS content.
Very cool stuff, indeed. I am looking forward to hearing more of this.