Would anyone be interested in me hosting a copy of the Uboachan Dream World MUD specifically for sushichan users? We could call it Sushi World or something silly like that. If you haven't checked it out yet, it's a multiplayer text adventure engine I wrote over the past week where the users create all of the content with in-game commands. You can explore and make worlds with friends and it's probably also good for roleplaying.
There's an instance running at http://dream.uboachan.net/