You don't ever have to leave the Tor network. I host IRC on a hidden service, and even Facebook (lol) offers a hidden service endpoint. All that is needed is

You don't ever have to leave the Tor network. I host IRC on a hidden service, and even Facebook (lol) offers a hidden service endpoint. All that is needed is for a critical mass of people and a decent index: and we successfully have reinvented "the wired" from Serial Experiments: Lain