I've posted a couple of times about using RSS from ASP.NET, so this interested me a fair bit, Jason Salas has posted a nice server control which allows very simple generation of RSS feeds based on a query to a SQL Server database.
There's been a bit of chat about whether such a control should be included in Whidbey - to be honest I think it's a bit late for this and I'd rather time was spent improving what's already there than adding arbitrary new features.