The book has been challenged for content dealing with sexually explicit situations, though it was intended for readers 14 and up. The main characters in the story are teenagers who also drink, smoke and use foul language. [1] The appearance of what were once traditionally adult-themes has caused some to question whether or not the book should be marketed to young teens. The book has been sited as an example of an increasingly blurry difference between young-adult and adult publishing. [2]