Wiki, Role of media/medium in communication. Marshall Mcluhan's book
The whole book "understanding media" by Marshall McLuhan.
Blogging and Internet forums and their educational value.
A page discussing the Shannon & Weaver communication model.
An amazing study on the coherence of Computer Mediated Communication.
American Psychological Association (APA):
communication. (n.d.). The American Heritage® Dictionary of the English Language, Fourth Edition. Retrieved August 14, 2008, from Dictionary.com website: http://dictionary.reference.com/browse/communication - Callum McMahon on 2008-08-14