I think about this all the time and was sad to see Sqwiggle die -- excited to see this evolve.

A couple quick thoughts:

- What's it like to be in two channels attempting to have a "meeting"? Seems like that will get confusing quickly.

- Consider an idle state where a snapshot is posted every so often (~once/minute) until people switch to an active discussion. That way you can see who's around with way less bandwidth.