Have been taking the Sloan-C Online Teaching Certificate - and have really enjoyed it and learned a great deal. It concerns conventional online learning, mostly at universities, using enclosed and traditional virtual learning platforms (Blackboard, Moodle, etc). Hence definitely Web 1.0 in approach.
The idea of a Web 2.0 collaborative online learning SYSTEM has to be the next thing - and a Massive Open Online Course (a MOOC) has to be it. David Cornier worked on this with colleagues June Sandy McAuley, Bonnie Stewart and George Siemens, and he explains all in the following videos: