[tangue]

Codecademy courses are fairly easy compare to those of Coursera or Udacity. There's a huge difference between giving someone a badge because he has made something trivial and trying to teach this person real CS concepts. For those who really want to learn something Udacity is way better than Codecademy.

[piratelogic]

That's a fair argument, but surely there is a way to incorporate Codecademy's mechanics into sites that cover more advanced material? I suppose that Udacity's "Programming a Robotic Car" wouldn't have had much luck using this method, but perhaps an introductory algorithms and data structures course could.