Also running a couple of PbP games myself, and I have eight players in both of the games, and am playing in other games with 3-7 other players (not counting DM).
Couple of sites that are designed for on-line play:
PlayByWeb
RolePlay OnLine
Typically, what happens is that some people are carrying the story more than others, but the larger group allows the game to keep moving even if someone is away for a few days (or more), or one of the players drops and a replacement hasn't been found.
In most of the games I've been in, there's usually an ideal posting rate (4-7x a week being common), but when combat comes around, a window of 24-48hrs for posting an action.
Couple of sites that are designed for on-line play:
PlayByWeb
RolePlay OnLine
Typically, what happens is that some people are carrying the story more than others, but the larger group allows the game to keep moving even if someone is away for a few days (or more), or one of the players drops and a replacement hasn't been found.
In most of the games I've been in, there's usually an ideal posting rate (4-7x a week being common), but when combat comes around, a window of 24-48hrs for posting an action.