The Duolingo video. Private beta started today.(youtube.com)9 points·by gregg1982·15 anni fa·1 commentsyoutube.comThe Duolingo video. Private beta started today.http://www.youtube.com/watch?v=WyzJ2Qq9Abs&rel=11 commentsPost comment[–]goozer32·15 anni fareplyYep, awesome.