Now days lots of spammers are registering on my forum. Daily 300-400 spammers are registering. I tried google captcha, Q&A and all other available captchas. But now positive result.
Please suggest me any other option to prevent these spammers.
"The good news is hell is just the product of a morbid human imagination.
The bad news is, whatever humans can imagine, they can usually create." - Harmony Cobel