I think having multi-user upload capability included in ZenPhoto is a great idea. Giving friends, family members, or colleagues the ability to upload photos is, I think, a necessary feature for any web photo gallery.
If the creators behind ZenPhoto don't want to include such a feature, that's fine. They've made it very easy for others to add it.
As I understand it, all the albums and photos are located in the 'albums' directory under the ZenPhoto installation directory. All someone has to do is create/use a script (php?) that allows multiple users permission to upload photos to that directory and the directories underneath it. If the script could limit things like deleting photos/albums and grant things like the creation of new albums, then that'd be even better.
I've seen several php uploading scripts that provide multi-user file uploads. I haven't, however, found one that fits this kind of scenerio. I'm no programmer, so creating the script myself would be far too tedious. I wouldn't even know where to begin. But I'm sure someone could easily create/modify an existing php upload script that would work easily within ZenPhoto's structure.
I know there is always the FTP option. But having a web interface would make it easier for users that are less computer savvy.
Just my thoughts.
If anyone knows of a php script that could/does work well with ZenPhoto, please share.