I have added a mod to the new user registration system.
New users (anyone with 10 posts or less) cannot post their website or their signature on the registration page.
Many of the recent new users have been spambots, which fake a registration entry and post their website on the forum. Once you have 11 posts or more you can go to your profile page and add in your signature and website address.
Hopefully the spambot registrations will end now. It's been getting crazy recently.
-Jesse