I just hope they make the courses fully functional on mobile/tablet devices. The 3 I've tried (coursera, udacity and edx) seem to be completely ignoring this area. Maybe it would help improve the completion rates too.
Also, the final paragraph in the article makes a good counterpoint to this:
> Michael S. Roth, the president of Wesleyan University, is teaching a course in European intellectual history on Coursera. "People have to get over the idea of signing up for a course and not finishing it," he said. "We all have to get over feeling guilty. There is no right way or wrong way to use an online class. This is a great platform for lifelong learning."