Posted by GTrefalt on September 27, 2013

Source: www.wikipedia.org

You want to learn languages iteractively through game? Then Duolingo is the right choice for you. It is a free language-learning website/app. You just have to sign in, choose the language you want to learn and begin to play. For now it offers English, Spanish, French, German, Protugese, and Italian. And it is completely free of charge and without any adds. You will ask, how this is possible? The answer is crowd sourcing, see the video below.

It is a simple and elegant idea on how to spread the knowladge for free and get something in return. Linux community is functioning on similar basis. And I think that these kind of ideas can be the lighthouses for the future development of our society.