For those of you who live in a cave (or a third-world country) and haven't yet mastered the fine art of using the Internet to upload webcam pictures of your ding-dong for the whole world to see, Captcha is the system used by websites that was designed to discourage spammers by requiring a person to enter a series of numbers and letters into a tiny box. After pressing "enter", you will then be informed that you entered the wrong text and will be presented with a whole new series of squiggles, which you must correctly enter into the box if you want to proceed. The jackhole behind this nuisance is a 32 year-old nerd by the name of Luis Ahn, who undoubtedly decided that since he couldn't get a date on a Saturday night, he would stay home and devise a malicious plot to complicate the lives of millions of people by subjecting them to a diabolical optometry examination. This post-pubescent pansy has gone on to make quite a name for himself. Discover Magazine named ...