[Quiet Man Cometh]

Not sure what you mean by "go with that" Yoku.

I get peeved when people trash my books after reading them, when I get covers that are torn or have rips or scrapes or they come back with crooked spines. It's not hard to *not* damage a book when reading it. I'm forgiving of most things since when I lend it out I know that I'm takinga risk and I accept that, but I expect the borrower to also make an attempt not to damage something they're borrowing.

As for the 180 degrees thing, depends on the book. I've seen cheap books nearly break in half from that, especially if they are thick, or warped covers making it difficult to open without cracking into the spine. Gently working the spine a bit is usually all one needs to do with a hardcover to preserve the shape. Some books do need fragile handling though, or one may as well just scrap them page by page as one goes since they'll end up the same anyway.