http://en.wikipedia.org/wiki/Duolingo
“Duolingo is a free language-learning website and crowdsourced text translation platform. The service is designed so that as users progress through the lessons, they simultaneously help to translate websites and other documents.[1][2] As of May 2012, the site offers Spanish, French and German courses for English speakers, as well as English for Spanish speakers. They plan to add Italian, Portuguese, and Chinese.[3] Duolingo started its private beta on 30 November 2011, and has accumulated a waiting list of more than 300,000 users.[4] Duolingo’s highly anticipated launch is scheduled for June 19, 2012.[5]”
I have beta, does anyone want invites? Can currently learn spanish, german, french. :) Just send me ur email.
Also mentioned in this video.