My cousin Kimberly confesses that Twilight is a guilty pleasure, but she doesn't seem to think it's potentially harmful for anyone unless they're trying to use it as a model for how to write. Of course, if you're aiming to produce a bestseller, I guess you could do worse. She was stunned when she saw Twilight on ALA's frequently challenged books list. (It was #10 for 2010. That has a certain symmetry you've to love!) Apparently shimmery vampires and lustful thoughts were just too much for parents somewhere. Just in case you're wondering, yes, according to ALA's Office of Intellectual Freedom (OIF), parents challenge books more frequently than any other group.
Books are usually challenged because of "sexually explicit" material and offensive language. However, violence and homosexuality(?) are also frequently cited as reasons to challenge books (propose having them removed from the library or curriculum.)
Maybe Holden Caulfield in Catcher in the Rye is a potty mouth, but he doesn't say anything I haven't seen scribbled on the inside of a high school bathroom stall. Am I alone in that? (This is assuming you get to the words hidden under the penis drawings.)
Want more details about why your favorite book was banned? Don't look for logic, but you will find an explanation here thanks to the hard work of The American Booksellers Foundation for Free Expression (ABFFE).
Q4U: Which book are you surprised to see on the banned book list?