What is kbAlertz.com?
kbAlertz.com is an e-mail notification system that scans the entire Microsoft Knowledge Base every night, and e-mails you when updates or additions are made to the technologies you subscribe to. Since we scan the entire knowledge base, we also have a pretty good search system for you to use on the left menu.
You can get this as an RSS feed, if you don't like to subscribe via email.
(Thanks Robert Scoble)