Science fiction fandom other groups including LGBT communities, libertarians, neo-pagans, and space activist groups like the L5 Society, among many others. Some groups exist almost entirely within fandom but are distinct and cohesive subcultures in their own rights, such as filkers, costumers, and convention runners (sometimes called "SMOFs"). Fandom encompasses subsets of fans that are principally interested in a single writer or subgenre, such as Tolkien fandom, and ("Trekkies"). Even short-lived television series may have dedicated followings, such as the fans of Joss Whedon's "Firefly" television series and movie "Serenity", known as Browncoats. Participation in science fiction fandom often overlaps with other similar
Joss Whedon Whedon of 15 years of multiple infidelities and the hypocrisy of touting feminist ideals while using their marriage "as a shield" for his misuse of power. A Whedon spokesperson said the essay contained "inaccuracies and misrepresentations". The following day, the moderators of the fan-site Whedonesque.com announced that the website will stop updating and eventually become a read-only site. Whedon often hires the same actors for his projects, and has been described as "the gravitational center of the Whedonverse, a galaxy that spins recurring actors and themes through an orbital system of TV shows, films and comic books that all share