MIT OpenCourseWare

How about taking the idea of Merlot a step further and putting all of one's course materials online. It could become a kind of open source of learning materials for all kinds of classes. You could share lectures, assignments, reading materials, and more; everything but the academic credit itself. MIT initiated this kind of project some years ago. It has picked up some followers at other institutions. There are useful materials to be found in some of these classes!