getting rid of notifications?

I have recieved some visitor messages which have given me some notifications. I have clicked on the notification multiple times, and have replied to the visitor messages however the notification for it is not disappearing.

Is there a way to manually flush all notifications?

170 views and no reply. Is this possible? if not, is there a way I can request the feature for BA to add it?

Fixed! Basically I had to select all visitor messages and approve them using the really small camouflaged grey button at the bottom of the page (moderator tools). However I still think a notification ‘flush’ feature would greatly improve the usability of BA.