It wouldn't work for us-- our members would just go back to the Yahoo! group they founded and didn't invite us to. (That strikes me as bad, for a company. Somehow. That all the users of its software have founded a group it's not invited to? Hmm.) So if we want to compete with that, I think premoderation is out.
But people who don't use forums don't understand, at all, how much is involved in their maintenance.
i looked at the specs and such for invissionboard, and i guess i could get it up and running.
the issue is the one noted by dragonlady7. i do our webstuff 'cuz it's fun and i don't have to supervise anybody but me. i also have a staff of pr and tech writers that do other stuff, and i need to keep a couple of fingers (and the occassional toe) involved in what they're doin'.
the other is if they have to wait our intended users will go back to the google or yahoo! clubs they formed and don't want us involved with. if the individual has to wait to see their post, why use us?