Re: How to collapse notifications?
I don't think Bulletin has a setting for it (I use it too) BUT it does seem to "remember" your last setting. So for instance I just sent myself two texts and then pulled down the Notification Center to see them. I then tapped on the Messages header to collapse the section, and then closed the Notification Center. I then sent a third message. When I pulled down the NC again my Messages section was still collapsed but now showed that I had 3 messages waiting.
In other words: just remember to collapse it when you're done with the NC.