I cant see this subterfuge lasting for long. People will notice when their sent mail never arrives to the group. Or they will feel terribly betrayed. The small list for local moms that I've had going for about 2 yrs is run with a list of guidelines. People can complain to me all the want, but in any dispute the bottom line decision is mine and is not arguable.
People seem happy.
It's very wonderful. I think the point here is that oftentimes democracies dont work in these environments. People would notice immediately that the mail bunches up where it used to turn right around. They'd post something about it. You'd have to censor that.