Yep. As far as the forum is concerned, it's ALL new posts. Need to clear the backlog.
Notifications are little overkill, at least for an over-contributor like myself who's got their grubby little fingers in every thread. Would be nice to have settings to tweak them.
Also, moderators aren't distinguished from commoners at the moment. This is good in terms of a true, democratic discussion where everyone is seen as equal, but it's not so good when it comes to bossing people about as there's nothing to show one's authorised to do so.
These are probably already on your to-do list, but I thought I'd mention just in case.