2) I like the fact that the interface is built with Objective-J/cappacino, it feels more "native" than flash, which is what a lot of similar apps use
3) At the same time, the interface can be "broken" sometimes in that it doesn't react like you expect it to, for example, modal dialogs don't close when you press the "escape" key and the alert dialog ( after registering ) don't close after pressing the enter key.
4) Right click doesn't work.. would be nice to have a context menu to do various operations.
5) Shouldn't the loader only allow image files? I tried to upload a .pdf and it seemed to work (progress bar showed up..etc ) but afterwards it doesn't show up in my library.
6) I don't know about the whole "room" concept, I mean.. whats wrong with albums??
7) Although the cappacino based interface is super awesome, I could also see this limiting what this app can do, I mean, if its done in flash, you could do all kinds of cool stuff like the rest of the functions in iPhoto..etc