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)

An anonymous reader writes: A while back we discussed Code Combat, a multiplayer game that lets players program their way to victory. They recently launched a tournament called Greed, where coders had to write algorithms for competitively collecting coins. 545 programmers participated, submitting over 126,000 lines of code, which resulted in 390 billion statements being executed on a 673-core supercomputer. The winner, going by the name of "Wizard Dude," won 363 matches, tied 14, and lost none! He explains his strategy: "My coin-collecting algorithm uses a novel forces-based mechanism to control movement. Each coin on the map applies an attractive force on collectors (peasants/peons) proportional to its value over distance squared. Allied collectors and the arena edges apply a repulsive force, pushing other collectors away. The sum of these forces produces a vector indicating the direction in which the collector should move this turn. The result is that: 1) collectors naturally move towards clusters of coins that give the greatest overall payoff, 2) collectors spread out evenly to cover territory. Additionally, the value of each coin is scaled depending on its distance from the nearest enemy collector, weighting in favor of coins with an almost even distance. This encourages collectors not to chase lost coins, but to deprive the enemy of contested coins first and leave safer coins for later."

An anonymous reader writes "Microsoft on Wednesday released SkyDrive 3.0 for iOS out of the blue. Last time the app was in the news, Apple was stopping Microsoft from pushing out an update in the App Store because the company doesn't pay a 30 percent cut of the subscription revenue it generates. Now we've learned how Microsoft managed to update its iOS app today. 'We worked with Apple to create a solution that benefited our mutual customers,' a Microsoft spokesperson told TNW. 'The SkyDrive app for iOS is slightly different than other SkyDrive apps in that people interested in buying additional storage will do so via the web versus in the app.' Does this set a precedent for an iOS version of Microsoft Office?"