Mouseworld is gone.
A direct port to the former center of Disney tribute on the grid now lands you in the middle of the ocean next to Tikvah, the "Jewish Island".
To either side of the virtual Ark of the Covenant (and one can only hope they built it in place, rather than moving it) is a notecard dispenser for more information on the appearance of the Ark. [Note from the Editrix: Per creator request, detailed below, I've removed the text of the notecard. Granted, I don't entirely understand why, but I was asked, so it's gone. You'll just have to go to Tikvah and read the notecard for yourselves.]
Why did Honda Enoch give up? Why was the sim sold? I don't know yet. Hopefully, I'll be able to find out.
[Update: Back in Aprille of this year, SLU covered the cease-and-desist letter (supposedly) received by Enoch. At that time his in-world group confirmed this, and that a closing party would be held. I wasn't a member of the in-world group, so it could have happened, but...the entire thing is still odd. Because Disney usually doesn't send out C&D letters; in fact, as the Doombuggies site proves, Disney does--and has, in the past--authorized extremely detailed fan tributes.
[What's even stranger, is I'm fairly sure I visited Mouseworld after Aprille, so I'm more than a bit confused. That, and the news seemed to hit with a splash today, and not six months ago...]