This is an interview with Duolingo engineer Franklin Ditzler. He's not a smooth marketing guy getting all rah-rah about the company and what it does, just a coder who enjoys his job and seems to like where he works and what he's doing. Note that Duolingo is a free language teaching tool, and they seem determined to keep it free for language students by selling crowdsourced translation services to companies like CNN and BuzzFeed.
Duolingo founder and CEO Luis von Ahn is an associate professor in the Carnegie Mellon University Computer Science Department, and was one of the original developers behind reCAPTCHA. Google acquired ReCAPTCHA in 2009 for "an undisclosed sum," a bit of history that led TechCrunch to speculate back in 2011 that Google would buy Duolingo within six months -- which didn't happen. But don't despair. It's still possible that Google (or another big company) might absorb Duolingo. We'll just have to wait and see -- and possibly improve our foreign language skills while we wait. (Alternate Video Link)