A project worth following: Massively Multiplayer Online Learning: "Instead of holding one-to-many classes via Webex, the company is building a new product from the ground up. Founder Farbood Nivi calls it MMOL, for Massive Multiplayer Online Learning (a play on the term MMOG). He says studies show that people learn best from each other, not in a teacher-students situation."
The rather sweeping statement that "students learn best from each other needs to be qualified. Context determines best approaches. My tolerance for monochromatic viewpoints of learning is diminishing. Context, context, context. Sometimes an expert is needed. Other times peer assistance is fine. And in other cases, self-learning will work quite well.