I disagree a bit with this statement:
I don’t think there is such a thing as a bad book for children. Every now and again it becomes fashionable among some adults to point at a subset of children’s books, a genre, perhaps, or an author, and to declare them bad books, books that children should be stopped from reading.
While I do not think it is useful to forbid a child from reading a specific book, parents should still talk to them about the messages that books send. If you ignore the vampire/werewolf part of Twilight, you are left with a story of a really unhealthy relationship. A person should not have to fundamentally change who they are in order to feel worthy of someone else. It is not romantic to stalk someone or forbid a girlfriend (or boyfriend) from hanging out with their other friends. Becoming suicidal is not a healthy reaction to having someone break up with you. Unfortunately, these are the sort of messages that Twilight sends to its readers (and some of them even show up in the Twilight-fan-fiction 50 Shades of Gray).
