Some authors have said that they wrote fan fiction before they were published, or are pro-fan fiction. Naomi Novik has mentioned writing fanfic for television series and movies, and says she'd be thrilled to know that fans were writing fanfic for her series (though she also said she'd be careful not to read any of it); Anne McCaffrey allowed fan fiction, but had a page of rules she expected her fans to follow; Anne Harris has said, "I live for the day my characters get slashed"; Tamora Pierce stated on her website that she began writing "Lord of the Rings" and "Star Trek" fanfiction and has no issue with fanfictions based on her works, provided they are non-profit. Author Cassandra Clare was a popular "Harry Potter" fanfiction author before she published her first novel.