We have a site with very low activity -- only a few legitimate messages each week. That means we don't check for (and moderate) messages very often. We would like to receive an email notification whenever a new message arrives for moderation, similar to how messages arrive when a new registration is awaiting moderation. OptionL "Send email to administrator if there are new posts waiting for approval."
And here's a cool optimization: When a subsequent post comes in for moderation, (optionally) don't send another email to the administrator. After all, the first email told him to check to forum for posts. But once he does moderate messages, reset the flag so that the *next* time a new post is made, a new email to the administrator will go out again (but just once). I hope I explained that properly!