If you want to have fun, type this url :
www.wincustomize.com/window.asp?Cmd=AUTHORINFO&accountid=1 and just change the id #. I did that one day, one number after the other starting with 1 and all the way to my own id (142). I wsa just curious. It's quite intersting.

Also, you'll notice that a lot of accounts don't exist anymore, I wonder why.