@therecusant: We do have the 1 post per day policy, but it doesn't really have any teeth because 1) We have to understand that people have personal lives and aren't always able to post every day, and sometimes they need to handle more important mattersand may be away from their computers for days at a time, and 2) the only thing you can really do to enforce a post per day policy is kick them for not agreeing, which puts us right back here, except now you look like an inflexible jerk and nobody wants to play with an inflexible jerk of a DM.
I did send out an invite to someone that expressed interest before, who is playing in the B/X game I'm running. That will bring us up to four again at least. And we should consider if we want to stay with four players or go back up to five...