Eduardo, thanks for the reply! It is especially awesome to receive feedback on a teaching blog from former students.
Joel’s work at StackOverflow is great and I’m looking at how to use that influence in my work in education actually. Something I have been working on is how to bring the coding part more “live” and visible besides posting to GitHub. I think the time for coding from a browser is here.
Systems like Cloud9 (I knew about this) and CodeEval (new to me) are definitely players in this shift to visible/open education.