Board Thread:General Discussion/@comment-33420196-20180821013131/@comment-24155515-20180821132259

Considering Jimmy Wales was involved in the founding of Wikia (ahem, Wikicities), I'd imagine dates around or before him were circa October 2004 (and probably also involved in the founding, which I only just though about, d'oh). Jasonr's first edit was 2004-10-21, which I'd venture a guess was near the join date for that account.