I am running the latest, most-secure version of the forum software (phpBB). So I'm doing my best to stay on top of it. The problem now is that these are no longer completely automated attempts. There are now humans who create the accounts--taking the time to manually type in the CAPTCHA and reply to the activation email. That is, humans creating legitimate accounts. They then, I assume, sell these accounts in bulk to spammers for pennies each. There are plenty of places in the world where people will work for a few cents an hour.
The good thing is that the pattern is the account is created first, then it is days or even weeks before the spammer account is used to post. So if I catch them on creation, I can delete them before they are ever used.
I've got nothing better to do. Wheeee!
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