The problem with podcasts I've mentioned seems to be getting solved...

http://blogs.msdn.com/bkchung/archive/2005/08/19/453392.aspx

This was the problem I described - podcast's audios not being able to be indexed. This is getting solved by a speech recognition technology combined search engine PodZinger. Although i18n remains, regardless of the quality of the recognition, it seems to be really useful. Again, that's http://www.podzinger.com/. Patents pending...