Dean Hume - MVC Experiment : An Alternative to Captcha. I'm sure most of you have at some point been exposed to a CAPTCHA control on the net.
They come in loads of forms and are used to tell the difference between humans and computers (bots). If you have a website on the net, you are prone to lots of different kinds of attacks from bots - such as CSRF (Cross-Site Request Forgery) The Ruby Toolbox: Know your options! PuzzCAPTCHA Wordpress Comment Spam Protection Plugin. Get reCAPTCHA.