Captcha is a necessary evil we put up with on the Internet. I did a little digging and found there is much to learn about it.
I wrote about Capthca for my latest installment at SearchEngineLand – Recent Findings On Captcha & The User Experience
The purpose of Captcha is to find a way to prove that you’re a human being and not a computer with abuse on its agenda. However humble and helpful the original goal, today there is software available to bypass Captcha’s, as well as humans paid to solve Captcha for companies who wish to do harm.