I just want to weigh in with a thought on the course created and then deleted mid-session by a professor on Coursera. I'll say it in a way George Siemens doesn't: what a jerk.
Siemens applauds the move. "Coursera has been revealed as a house of cards in terms of governance and procedures for dealing with unusual situations." Well maybe. But that's hardly unique to Coursera. And I frankly don't believe the explanation, "I want to show how [C]oursera tracks you." So how does this show it? It doesn't. The most charitable explanation I can find is that the professor had a dispute with Coursera, which he resolved by killing the course.