I did this last night: http://www.spudfiles.com/forums/in-the-t15560.html
About 6 members jumped right in there, it was fun, pcguy even stopped in for a few. I think putting any kind of stipulations/times those kind of things are a turn off.
Shooting the shit about what ever is on your mind is much more fun! Cannon talk will come out naturaly, just like last night.