Rather than always a Subject line of "Notification: Reply to Your BB Topic", I'd much rather get notifications which indicated which thread just got a reply. Maybe in what forum, too, although hopefully people don't have multiple threads they started in multiple forums whose thread titles would not serve to disambiguate. (I.e., the thread title should be enough to tell me, the person who started the thread, which forum it was in, if I chose the thread title well.)