Do you ever wish you could pick up a book, turn to the back cover (or maybe the copyright page) and see what exactly the genre(s) is(are)?

I do1 Especially with the blending of many genres, but most specifically, I am thinking of how confusing it can be to distinguish between dystopian and post-apocalyptic novels (and sometimes science fiction). This is mostly a problem I have with young adult fiction. For instance, Under the Never Sky is definitely post-apocalyptic, but in my mind, it is not dystopian (but I am not 100% sure). Cinder is definitely post-apocalyptic and science fiction, but I definitely do not think it is dystopian.

But I am not trying to have a discussion on dystopian and post-apocalyptic novels (really). I just know that there are a lot of books in that gray area where I cannot figure it out or I can identify one genre, but not another one for sure. I think it would be helpful to have that information somewhere on the books. But it would have to be as accurate as possible. I think it could really help lessen confusion.

What do you think?