I received an email earlier from Mads Soegaard who is the Editor-in-Chief of Interaction-Design.org. He wanted to let me know that they’ve released an authoritative overview of Social Computing and its relation to social media by Thomas Erickson. He mentions that Thomas Erickson is a veteran researcher in social computing at IBM Watson Research Lab. Apparently the materials have took 10 months to produce and involved 3 editors, 2 peer-reviewers, and a camera crew of 4 people.
I’m just starting to go through the material now. It looks like a great resource. You can read and view the material at http://interaction-design.org/encyclopedia/social_computing.html?p=e210