We've been getting his with a considerable number of spam registrations the past week, despite the Captcha, entry of date of birth, acceptance of T&Cs, minimum password length etc... I'm disabling user registration to figure out how to best block this, or if they are somehow bypassing all of that stuff.
Yeah, I really don't get it. No spam on the site itself, but lots of clearly spammy registrations. It seems to have slowed now with the extra protection (2 today so far compared to about 25 yesterday).