reCAPTCHA and Duolingo: Luis von Ahn

reCAPTCHA and Duolingo: Luis von Ahn

In 2000, Luis von Ahn was starting his PhD in computer science when he attended a talk and happened to learn about one of Yahoo's biggest problems: automated bots were signing up for millions of free Yahoo email accounts, and generating tons of spam. Luis' idea to solve this problem became CAPTCHA, the squiggly letters we type into a website to prove we're human. He gave away that idea for free, but years later, that same idea had evolved into a new way to monetize language learning on the web, and became Duolingo. Today, the popular app is valued at $1.5 billion, and is seeing a big spike in growth while people are confined to their homes. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

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Episoder(835)

Advice Line with Sarah LaFleur of M.M. LaFleur

Advice Line with Sarah LaFleur of M.M. LaFleur

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NVIDIA: Jensen Huang. From near collapse to becoming the world’s biggest company

NVIDIA: Jensen Huang. From near collapse to becoming the world’s biggest company

NVIDIA is one of the most valuable companies in human history. Its chips run the AI systems transforming everything from entertainment to warfare. But for years, almost nobody believed in co-founder J...

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Advice Line: New Offerings, Bigger Markets

Advice Line: New Offerings, Bigger Markets

Today’s callers: Kristina in Florida wants to take her local pottery workshops nationwide. Then Jim from Colorado wonders if retail is right for his quick release camera straps. And Will in Ohio hopes...

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Room & Board: John Gabbert. A Broken Deal, a Family Rift, and the Birth of a Furniture Giant

Room & Board: John Gabbert. A Broken Deal, a Family Rift, and the Birth of a Furniture Giant

John Gabbert built a massive furniture brand. But in order to do it, he had to defy his family. John grew up working at his dad’s furniture store in the suburbs of Minneapolis. It sold classic, Americ...

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Advice Line with Jonah Peretti of Buzzfeed

Advice Line with Jonah Peretti of Buzzfeed

Today’s callers: Anthony from Miami considers the best method to grow his pop-up outdoor movie theater business. Then Andrew in San Francisco asks how to set his cat wrestling toy apart from competito...

7 Mai 43min

Beautycounter: Gregg Renfrew. She Built Beautycounter to $1B… Then Got Fired From Her Own Company

Beautycounter: Gregg Renfrew. She Built Beautycounter to $1B… Then Got Fired From Her Own Company

Gregg Renfrew started a movement by making better-for-you cosmetics, then enlisted an army of women to build the business through direct sales. But after selling Beautycounter, she was pushed out of t...

4 Mai 1h 12min

Advice Line with David Neeleman of JetBlue

Advice Line with David Neeleman of JetBlue

Today’s callers: Barbara in Massachusetts wonders how her nutrition education theater company might live on past her own involvement. Then Jeff in Illinois looks to carry the momentum from his Ninja W...

30 Apr 44min

Shep and Ian Murray: Vineyard Vines. A Stale Product Transforms into a Lifestyle Brand.

Shep and Ian Murray: Vineyard Vines. A Stale Product Transforms into a Lifestyle Brand.

In the late 1990s, Shep and Ian Murray looked at a shrinking category–men’s ties–and saw an opportunity: a necktie isn’t just functional. It’s expressive. It can signal identity, taste, aspiration. ...

27 Apr 1h 8min

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