LambdaMOO is <a href="http://www.cuddletech.com/blog/pivot/entry.php?
id=106">still around? (I left just after the virtual rape article.)
Actually, it isn't the original PARC LambdaMOO. The source code and a
chunk of the original database was made available to anyone who wanted
it and I think that this is one of those instances. It's one of the
virtual reality success stories, text-based or whatever.