How interested is anybody in this?

[Corriewf]

It would have to be a really active board to support it. The reason being is that either:
a. Members will only post in private forums

or

b. The private forums wont get any attention because of more popular forums

Maybe it would be best if the forums were pruned by a cron job after such and such time without activity, but in that case the usergroup would need to be removed too.

I think if that can be achieved this then this might be practical on some sites. I would give it a shot on mine to test.