This is too cool for words. MSN has an incubation team working on a next-generation Web portal/online RSS client called, "Start".
http://www.start.com/myw3b/.  Click on the Start logo in the upper-right, add a feed- just type the URL for the webpage and the service auto-detects and validates an RSS feed (if available).  This is brilliant.

While you're at it, go play in the MSN Sandbox. Lots of cool stuff happening in incubation these days.