3.2 Greatly Reduced Spammer sign-ups.

I don't know if it was a software or configuration change but 3.2 seems to have greatly reduced the number of spammer sign-ups.

With 3.1.x we had 10-12 spammers sign up per day (though they were instantly flagged so they couldn't post by the ipb spam software). Now they aren't even getting through the signup phase.

Thanks for providing such a great software and service.