Book-browser and shelves analogy

The book-browser on first page is nice ... so nice that I want it for me alone! :)
not really ... what I mean is that if we could have a nice interface like the book browser to organize our books, something like: one browser (shelf) per tag (category), and drap-drop interface to move the books ... it duplicate the spatial arrangement we can have on our real shelves at home/office/library.
What do you guys think of that?

Just an idea ... but I would really love it ;)

Does bookjetty has an API I could play with to try some ideas?

Khigia, this one will be quite a challenge to built with pure Javascript, I guess it could be easier with flash interface. So far if current bookshelf already surf the purpose, it may be better off to focus the effort on other functionalities. :)

API, still not available at the moment, probably can play with the RSS feed first. :D