Ladder play has been so popular that we've decided to run a short 1v1 tournament this weekend, just to get into the swing of things. The format is single elimination within pools stratified by rank. Everyone should be able to sign up and have a decent chance within their pool.
Sign up in this forum thread: http://zero-k.info/Forum/Thread/25212. You can log into the Zero-K forum via Steam if you have an account through Steam on the multiplayer server.