If the gutter is wide enough, you can have them rebound with spiral binding. This is incredible useful for holding or putting a book flat. I did this to all my textbooks in college.
This is probably just a personal quirk, but I despise spiral bindings. I hate the feel of them. They never hold together. They catch on everything and come apart. Pages get torn far more easily. They make the books - if you can even call spiral-bound stacks if paper that - more difficult to organize. They suck.
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