I just added RSD support to this weblog. It shouldn't effect you the reader, but it will make it easier for me to configure software to edit this site. Here's what rsd does:

Really Simple Discovery is a way to help client software find the services needed to read, edit, or "work with" weblogging software...The goal is simple. To reduce the information required to UserName, Password, and homepage URL.

If you have a Movable Type weblog and want to add RSD support, head on over here.