Using captchas and the nature of spam

Yes, but this captures robots and that is no longer the burning issue. It is real people going through thousands of sites and submitting spam that is the current problem, not robots.

The anti-spam processing is supposed to throw up a captcha image when it detects something spammy. Either that isn’t working or the spammers are just completing the captcha anyway.

I’ve just uploaded some additional changes to see if they improve things.