I personally do not like captcha. But it doesn't mean I should not use captcha. I'm looking for a good captcha plugin and I found this one.
Most captchas are boring, ineffective, and sometimes too hard to solve. This KeyCAPTCHA seems interesting.
I visited their website and run their demos. Too bad, All of the demos simply do not work on my Opera 12.16 browser.
This captcha plugin is a great idea, but sorry to say .. don't use it.