Did a quick search and didn't see this posted, so the question/feature request is, would it be possible to see an option for allowing comments for an album/set as well as individual photos?
This is not something I've specifically wanted, but a number of people who I have directed to ZenPhoto for use as a photo gallery, have asked if it was something it could do. Granted, most of these people have been artists, so there is a greater need/want for allowing a set to be commented on outside of any specific pieces (photos).
I haven't looked at the code or the db schema for ZP, so I am honestly unaware of how easy this would be to add, either officially or as a 'hack'. As I know there are other feature priorities and album comments isn't something most users are going to need/want, any pointers for the latter (hack) would be appreciated.