Book Marks

I am required on occasion to visit the library for work purposes, and have to browse through numerous shelves of dry scientific tomes. Many of the books my eyes pass over are, frankly, not much good, written by crusty academics whose only aim was to get their name in print. It is not possible when in the library to read the books in depth, so I end up withdrawing lots of books which then gather dust on my shelves until they are due back. (And since the library is a 15 minute walk away I risk a hernia each time I clear my shelves.)

What I would like is a voting system introduced, so that when you return a book you are given the opportunity to rate its usefulness on a scale of one to ten (or perhaps croissant-fishbone). This could be done with the addition of a small box beside the date stamp where you could record your opinion if you so desire. Over time the most useful books would accumulate high scores, and these could be placed in their own section for quicker referencing.

While I want this for an academic library, it would also be interesting to apply it to public libraries (a slightly different bent on [billblue]'s idea - link). Perhaps it would change reading habits if the books of currently less popular authors scored highly (maybe Catherine Cookson scores 6.3 on average, while Gabriel Garcia Marquez scores 8.4).