To join SIWA your wiki must be:
~ About science fiction e.g television shows, movies, games, books etc
~ Be independently run, owned and maintained, that is not part of a wiki farm such as Wikia, Shoutwiki, Wikkii etc (For some of these wiki farms, affiliation can be requested)
~ Have some staying power, e.g must have been active for at least 6 months and over 250 articles