I wrote a script that runs every 15 minutes and checks the IPs of new users against Stop Forum Spam's API here: http://www.stopforumspam.com/apis http://www.st

I wrote a script that runs every 15 minutes and checks the IPs of new users against Stop Forum Spam's API here: http://www.stopforumspam.com/apis http://www.stopforumspam.com/apis It's caught the significant majority of spammers, giving me some time to write other spam protection checks.