Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA)
While researching various CAPTCHA solutions to use on my contact page, I concluded that all the free ones were not very pretty. They were certainly not ioyu palette-compatible. So I took a shot at building my own CAPTCHA solution and was surprised at the relative ease of coding it and making it pretty at the same time.
The above image is rendered on the server using the ServerObjects ASPImage component. If your host has this component installed and you'd like the source code to use on your own page, please contact me.
Oh, and I apologize if it generates the occasional curse word. I hadn't taken the time to refine its sensibilities yet.