You know, the more and more detached the technology we use the easier it is to have "internet" or "telephone" tough guys... these are people who are willing to be complete assholes to people they don't know, especially if they can do it anonymously. I have to believe that most of the people who will leave crappy comments or be an asshole on the phone, would never do that face to face. (either because the person is "real" then, or because they don't want to get there ass kicked)
Annotations Service - The newest thing posted on MSDN lab, this is the service used when you post comments on something in the longhorn SDK, and apparantly you can load external RSS feeds as well.