Captcha with typo?

I was searching the typo archives and found no mention of it, but has
anyone succesfully implemented captcha in Typo? I don’t get a lot of
traffic but I despise comment spammers.

Pointing me to some links other than the Captcha tutorials on the RoR
wiki would be appreciated.

Chris H.

http://captcha.rubyforge.org/

there are some tutorials on google as well