[racket-dev] spam trac tickets

Robby Findler wrote at 03/22/2011 11:28 PM:
> Looks like the spammers have found a way thru google's captcha thing.
>   

That's frustrating.  I wonder whether a simple homebrew captcha (e.g., 
varying but simple Racket expression that even beginners understand and 
can do in their head) would be effective for a while.

This is easy for captcha-crackers to break if they look specifically at 
the Racket site, but it's not vulnerable to some spammer automatically 
detecting all the sites that are using ReCaptcha and then using their 
standard exploit for that site (machine vision, farms of humans).

-- 
http://www.neilvandyke.org/