Already I've added a few more fields that I didn't really want. Instead of showing just a title, I added the comment field that folderblog supports. I will likely just be using this to display the location the photo was taken (as per the current two entries), and not much more. I guess it could come in handy for other things from time to time.
Actually, the whole comment dialogue needs tidying up a bit... by default folderblog doesn't suppress the "view current comments" when there are none. Because of the way folderblog is designed, this sort of makes theming it a little difficult (this isn't strictly true, it just means going against the model/controller-view design). I'll get it sorted out later on though.
Only other outstanding issue I can think of is the odd rounding of the EXIF info -- i.e. apertures of f/5.59999997 instead of f/5.6... and the truly bizarre shutter speeds that span days. I believe this is more an issue with EXIF export from Bibble than with the PHP EXIF support.
But anyway... get leaving some comments :)