The first Nomic I met was BerserkerNomic. It was nice (except perhaps when I was burned at the Stake). I later started deNomic? (
http://www.nomic.net/deadgames/denomic/) and joined MorningtonNomic, Agora and Genomic. Today, I have too little time for serious Nomicking.
I liked GardenNomic, by the way. Too bad it died before I got the chance to play in it.