IAmA scientist and startup CEO named Luis von Ahn. I developed CAPTCHA and reCAPTCHA, those squiggly characters you see all over the web (sorry!). I'm now working on Duolingo, a new way to learn languages while helping to translate the Web. AMA.
Hi Reddit! I'm Luis von Ahn. I helped create CAPTCHA and reCAPTCHA. In my defense, most people like reCAPTCHA better once they hear that it's being used to digitize books at a rate of 100 million words per day. I am not Lord Inglip, but for a while I had full control of the words shown in reCAPTCHA.
My new project is Duolingo, where you can learn languages 100% for free and help translate the Web at the same time. It may be crazy, but I really want to crowd-translate the whole Web into every major language, and you should help me! Btw, Duolingo has a pretty rocking subreddit.
I'm also a computer science professor at Carnegie Mellon and I'm from Guatemala.
I'll start at 2pm ET, so ask away!
Edit: Severin will kill me if I don't say this: Duolingo is hiring!