There are three main types of pseudonyms: pen names, stage names and user-names. Pen names are used by authors, usually to hide identity. Many famous books, such as The Outsiders and A Series of Unfortunate Events, have been written by authors using a pseudonym. Daniel Handler wrote A Series of Unfortunate Events under the pseudonym Lemony Snicket both because he wanted to make the author a character in the story and because he wanted to hide his real name. When she published The Outsiders, Susan Eloise Hinton decided to use her initials, S. E., instead of her first and middle names, because she did not want readers to guess her gender. The Brontë sisters (Anne, Emily and Charlotte) used pseudonyms to hide the fact that they based many of their characters on their neighbors.