Bottom line: virtual classrooms are web 2.0 environments. Or they could be if the environment is designed around constructivist principles. Read/Write, Upload/Download... share and rate contributions.. you can do this with a course management system or on the open web.
Here is a wiki I set up to support a presentation on this content at NECC 2008 in San Antonio last week:
http://web2virtualclassroom.wikispaces.com/
What do you think?
Tags: 2.0, NECC, classrooms, course, management, systems, virtual, web, wiki