Sort Algorithms Visualized and Other Fun Projects

Thanks to ck's blog I just found this great website visualizing number sorting computer algorithms. And I want to share it with you.

Also I love the concept of fold.it to solve difficult scientific problems using computer games and gamers.

And at duolingo.com, a project is in closed beta to learn a language and help translate texts at the same time. (Click bottom left to ask for an invitation to the closed beta.)