Ah true, even if notices are shown in the main channel they are private and so should cue on the *:?:, yes?
And Failed ReHab, it would be a good idea, then again PMs could equally be flooded. However, there are many options available for personal flood protection already and interfacing a PM grabber (and a notice grabber) with this protection would give you the ability to keep from being flooded without having to personally code it into your grabber snippet(s) :P