So, you are unhappy with a five percent completion rate. Hire tutors (lots of them, if it is massive). Try to get machines to tutor. Use learners as tutors (never mind the pedagogical affordances, you only care about scale and completion). Set up automated phone calls to remind people to turn in their homework. Ring the (behaviorist) bell. Or not. Google’s Coursebuilder team has an interesting take on completion rates.