@Dr Herbie: There needs to be a feature whereby Mods can ban and delete all threads by a user. At the moment this fight is too symmetric - it's just as much effort for us to remove the threads as it is for them to post them.

If we can delete all of their threads and ban the user, then suddenly it's much more effort for them to spam the forums - particularly since you can't script creating live-accounts because of the captchas.