I know Sam Gentile has already posted about this but I thought you ASP.NET and Web Standards "inclined" developers might want to download the latest IE7 beta. Besides being much more "standards" oriented, the new browser supports RSS Feeds!
http://www.microsoft.com/windows/ie/ie7/ie7betaredirect.mspx
A few other interesting blogs discussing this:
Don't forget to check your current site code against the new Web Developer Checklist!