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
Girls Club (TV series) episodes on a Wednesday night premiere after heavy promotion, but during commercial breaks they played a clip saying the show was cancelled in the US and would not be back after that night. Episodes were never re-broadcast and the show disappeared from the network after that night. The initial order was for 13 episodes. When the series was cancelled, six episodes were completed and only two had aired. The series was consistently the lowest-rated show in the 18–49 demographic in its time slot, with The WB's "Everwood" and UPN's "Girlfriends" faring better. In a mid-season poll of favorite TV shows