Boomcoach:
This sounds reminiscent of a long-running USEnet game, Red Dragon Inn or some such, that allowed fairly open posting. Some people just hung out in the inn RPing, some created adventures for other players, some players worked out storylines between themselves in private, then played out the storyline in posts for everyone to see.
...
Edit: the game was at alt.dragons-inn, not Red Dragon Inn.
Wow, another denizen of ad-i? (Met my spouse there, actually...)
Montfort was the base town, and lots of folks debuted their characters there, with the ability to post to a "general thread" for any PCs sitting around in the inn or to start new threads if you broke into a separate conversation. Maybe 12-18 folks regularly ran story-lines actually based in Montfort, with other story-lines occurring elsewhere in the vaguely-defined world that tied into events in Montfort. We did have some coordination behind the scenes to work out timing of events, to avoid time-discrepancies.