Most of these domains are parked. This means someone purchased them and left them at the domain registrar. You can play this game too by going to, e.g., godaddy.com and typing in a name. They'll direct you to who registered the domain and its nameservers. If you find any interesting ones, leave a comment or email me and I'll add it to the table.
|29-Jun-04 ... just missed
|23-Apr-04 ...recent, hmmm
|29-Jun-03 (4'10" - too short - although not as swarthy as Dukakis)
By the way, POTUS is a pretty cool site.