One >person from a thread could visit another and write about >them and their work, or a third person could write about >discussions between them.
Or, there could be two simultaneous narrative accounts of the conversation by each of the participants (in different fonts/ as a script with annotations in italics?) that could be edited by the participants to include their thoughts, kind of like an interview in a magazine.
Example (AQUAMAN and Extpertise meet for dinner):
"I consider it a blessing to meet and build with such talented people online." YOU CAN BLESS THESE NUTS. "Pass the mashed potatoes, please?" I'LL PASS EM TO YA ON THESE NUTS, BOSS. "SURE. NEED GRAVY?" I'm just glad Aqua likes me and doesn't call me Sexpertise anymore. IT'S WEIRD TO HAVE DINNER WITH SOMEONE WHO'LL BE COUNTERDEMONSTRATING ME TOMORROW. YOU CAN COUNTERDEMONSTRATE THESE NUTS, SEXPERTISE.
And so on. Of course, this example reveals the possible pitfalls of this format, but I'm sure my momentary lapse of reason doesn't completely obscure the possible value of this and how it relates to a message board's environment. Ideally, the collaboration would be more positive, but it may be an interesting experiment.