i changed the registration process so now we dont let users choose a password they get a randomly generated password sent to their email - so the email has to be valid. So lets gather their emails when we ban them and we'll force them to have to create new email accounts for every account they create on the site. its got to get annoying to them sooner or later.
after we block their emails and links they would have to create new email accountss create a url forwarder, register on the site, go to the different setions and post, just to get about 4 views per post before they are deleted...