David,
The short answer is the immediacy of it I think. There is the opportunity to a " ok, let me walk you through this" or "ok, hang on and let me try that"
There is also the opportunity for live interaction. It could be used as a training device, or a live ask the expert, for example say we were able to get Pradham Balter on line to do a "Corel Class" or seminar in which folks could ask him questions and get immediate answers to their quesitons WHILE they are actually working on the program.
These are just a couple of thoughts that make chat viable in my opinion. Sort of like SKYPE without talking.......which by the way for those of us that have signed up, David T. Harvey and Deena, UCONNDave, Peter Vasic, it has been not only a lot of fun, but a valuable tool.
I hope that answered your question.
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