I'm having users register just to add spam links to the User "About" section... I checked, and it doesn't look like there's a permission item to control links there. Surprising, because it looks like I can control links in posts, signatures, and profile posts... this seems the only place users can post links without a permission to control it. Too bad, because the easy way to solve this is just put newly registered users in a group where urls are disabled. Any other way to deal with this?