If you’ve verified you’re not a robot online, you’ve used something Luis von Ahn has created. He tells "Success! How I Did It," that he doesn’t read stories about himself, and he’s probably the only CEO our host, Rich Feloni, has ever interviewed who believably says he doesn’t care about money. Von Ahn is the CEO of Duolingo, a popular language learning app. He’s also one of the guys who developed CAPTCHA, those online tests that ask you to type in a word or series of letters when you buy tickets or set up an email account. Von Ahn grew up in Guatemala and he came to the US to be part of the tech scene. He was driven by a goal of getting millions of people to work together online. It made him a pioneer of the now ubiquitous crowdsourcing movement.

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