[Schroedingersat]

> Mainly forms -- login forms, comment forms, signup forms. Bots use Tor pretty heavily because it's anonymous and hard to block them without blocking the entire network. Login form abuse is mildly irritating but not a huge deal if you have other measures in place. Comment spam is annoying but there are some options that deal with it pretty well.

Then put the form behind your monopolistic internet gatekeeper. There's no reason for a GET to redirect to a sysiphean captcha treadmill.