Spam what spam? CAPTHA cures all…

I’m quite impressed by how effective just adding a CAPTCHA to my site has been in preventing spam comments/user registrations. I know it’s to be expected but I’ve gone from getting 170 spam comments and about 30 spam registrations a day to just one spam comment and no registrations.

Currently I’m using the SI Captcha for WordPress, does anyone know of one that is better? I installed Solvemedia’s CAPTCHA plugin which makes people type in the words from adverts as a CAPTCHA and supposedly allows you to earn “MEGA BUCKS” in doing so. But it asked for my accountants details and I don’t have an accountant, Also I expect that it’s US ads only…

Here is a video about their CAPTCHA which I think at the heart of it is a good idea:

Solve Media from Solve Media on Vimeo.

I particularly like CAPTCHAs that make you think, like adding numbers, or asking general knowledge questions, although I was very disappointed in T3 who’s CAPTCHA is the question who makes the iPod, which doesn’t accept Foxconn as an answer, I’d expect more from a technology magazine…

It would be quite cool to have CAPTCHA that made you play a round of space invaders or Pacman or something like that and wouldn’t let you comment till you win… Hmmm… Cool maybe, annoying definitely.

Meh…