I must say that I find the non-standard interface to be quite distracting, rather than 'fun'. While metaphors can be quite effective, there should still be some abstraction. The provided screenshot recalls a windows app, not a Mac one.
With regard to the journal window, the general consensus seems to be that drawers were a bad interface decision. Your implementation seems to take up too much space for items ('Add New Page', 'Insert Picture . . .') that should be implemented as standard toolbar items.
I am not a dogmatist-Interface conventions should be broken when they contribute to the experience. Delicious Library is a good example; it utilized a new metaphor, but did so in a manner that was somewhat familiar and felt as if it belonged on a mac. The rest of the 'Delicious Generation' went for non-standard eye candy purely for branding, rather than usability.
With the possible exception of your display of bookmarks, your app seems to fall into the later category, only without the professional (and I recognize, expensive) graphic design.