Speaking of Dave Winer, I just registered for my own OPML.org account :)

Thanks for signing up!

The first thing to do is to save a copy of this email for future reference. It’s important, without this password you may not be able to login next time you visit, and you may not be able to access information that we’re storing for you on our server.

Next time you visit the site, and you want to Login, you can go to this page and enter your email address and password:

http://www.opml.org/member/login

When you click on OK, the server will store a cookie on your computer, allowing you to access all of our services. As long as you use the same computer, you won’t have to manually enter the password again.

Again, thanks for signing up!

It's so refreshing to get a more personal conformation email that isn't just "You registered as XYZ. Please confirm."

I'm in the process of downloading the Mac OS X version of the OPML Outliner, it's going to be very interesting.