Forum Hundreds of spam users signing up a day!
 

I have tried all the different forms of human verification.
I used to use the questions with simple things like "what is 2 - 3 + 4 =" but then we started getting hundreds of spammers singing up, so I changed the questions but to no effect. I then tried captcha and image but neither of them made a difference.
Have you got any ideas?
They never make it out of the usergroup awaiting email confirmation. So they don't finish the registration or post.
Just bloody annoying as I hadn't pruned them for a while and last night I had to remove over 5000!