Before February 29, 2008, there were two wikis for the Super Smash Bros. series. These were: SmashWiki, hosted by Smash World Forums, and the Super Smash Bros. Wiki, hosted by Wikia and founded by Alexir55.
On February 29, 2008, SmashWiki merged with the Super Smash Bros. Wiki on Wikia.
SmashWiki's goal is to become one of the biggest sources for information on everything surrounding the Super Smash Bros. series. It being a wiki, anybody can edit it, giving it huge potential. You don't even have to register an account to edit, though you do miss out on a few handy things editing unregistered.