This is a great idea. Khan Academy is one of the coolest learning resources out there, and I've been happy to see it get some more coverage recently (via Reddit

This is a great idea. Khan Academy is one of the coolest learning resources out there, and I've been happy to see it get some more coverage recently (via Reddit). I think you're totally right in that small game mechanics can really be the difference between drudging through repetitve learning and having fun. Looking forward to earning some of these badges :)