At the moment, Uru's officially closed. However, there are a number of people operating servers out there. Technically, they're against the rules, but Cyan is turning a blind eye (and they really don't have the manpower anyhow). Given that reality (and because a number of people are strongly against these private servers) the private servers are usually by invite only. Since you've asked nicely, I imagine you'll get a PM soon asking if you'd like to join a server.
