Fan fiction
From Bulbapedia, the community-driven Pokémon encyclopedia.
Fan fiction (also spelled fanfiction and commonly abbreviated to fanfic) is fiction written by people who enjoy a film, novel, television show or other media work, using the characters and situations developed in it and developing new plots in which to use these characters.
While it does technically violate copyright laws, fans keep doing it, and copyright owners tend to ignore it as long as no money is being exchanged. Some authors are extremely protective of their work and forbid any fanfiction writing, including Anne Rice and Anne McCaffrey. Other authors encourage fan work. Most authors post a disclaimer at the beginning of their opening chapter or fic with a general statement about how they don't own the characters, plot, or anything related to the media work they're writing about.
Most large fan-based websites have their own fanfiction libraries, including Bulbagarden. Other sites, such as FanFiction.Net or Writing.com deal strictly with fanfiction only.

