Handling RSS Extensions in Clients
Greg has shown how NewsGator 2.0 handles RSS extensions in this posting. At this point it really only appeals to geeks, but that's fine because the geeks will write the extensions that the public at large can then leverage. It's nice to see the clients thinking about this.
There's an example in the book Content Syndication with RSS that shows how to extend Amphetadesk to deal with new RSS modules on an ad hoc basis, but that's even more techy.