Characteristics of CMC and Virtual Communities

in the article called "Virtual Behavior Settings: An Application of Behavior Setting Theories to Virtual Communities", Anita Blanchard grouped Computer-mediated communities (CMC) and virtual communities by the timing of the messages (synchronous vs. asynchronous) and the method of the access to the platform. You can see the table at

http://jcmc.indiana.edu/vol9/issue2/blanchard.html#s1