rhienelleth offers a well thought-out, level-headed and important discussion on the subject of rape used in fanfiction and on why writers should think twice about what and how they label their stories, and how far people should and shouldn't go.
eta: by "think about what you're writing" I'm referring especially to things seen in fic-reviews, ( like this one: ) I shall leave this uncommented, because if I do, heads will start rolling.