Hi Cindy:
Perhaps we're all just quietly thinking about this complex question about the nature of online dialogue. Personally, I still shake my head in wonder everytime I stop to think about this brave new world online. The fact that I can talk to almpst anyone, almost anywhere using a machine on my desk which shows me pictures and words, plays me music and videos (and of course spams me) is truly amazing, and we take it too much for granted.
To comment on the "dialogue" word in the title of this seminar, I'd like to play Devil's Advocate, and question whether dialogue is actually what we do online. Jane Vella's work on Dialogue Education comes to mind here. Here's the link to some resources in SCoPE related to the Teaching and Learning Readers' Group which discussed her book Learning to Listen, Learning to Teach (2002): http://scope.lidc.sfu.ca/mod/resource/view.php?id=460
In her book, Jane points out that "Dia means 'between', logos means 'word'. Hence. dia + logue = 'the word between us " (p. 3). It occurs to me that in an online environment there are many things that can create "noise" between us (or among a lot of us) which can interfere with the clarity of the dialogue. The noise can be external events, internal pre-occupations, the sound of construction outside my window, or the weak wireless connection that causes my words to be lost. In f2f dialogue, the noise can be mitigated by reading body language or hearing tone of voice.
So perhaps we need to come up with a different word for what happens online instead of dialogue. What happens in a virtual world is much more than the word between us. Who will lead the parade to come up with a new term?