Writing about real people is taboo among traditional fanfic writers. "Actorfic" violates the basic principle of fanfic, which is that writers are creating a rich, expanded universe around a show or movie. Actorfic merely indulges a fantasy. This is doubly true in slash, where writers risk enraging straight actors. Slash infuriates actors even when it focuses only on fictional characters. According to slash writers, one reason William Shatner so detests Trekkers is that he's disgusted by the slash fanfic written about Kirk. He takes it personally.