Originally Posted by Critteranne
Also, I'm pretty sure Amazon has review guidelines that the reviews must actually be about the content of the book.
Why shouldn't you be allowed to comment on the binding, paper, printing or typesetting quality of a paper book? Those are part of the product you get when you buy it (and you don't need to actually buy it to have something useful to say, you could have seen it in a bookstore, or gotten it as a gift). The same can be applied to ebooks, you can comment on the formatting, crappy OCR, obnoxious DRM or whatever.