The first LiveJournal communities began in December of 2000, and now there's a community for any and every topic possible. What is your all-time favorite LJ community? View other answers

As blatantly community_promo as it may seem, it's nomicide - the Livejournal Nomic community I manage with active_apathy. It's one of my favorite games, and I'm thrilled to be playing it, still.