"The TouchGraph? WikiBrowser is a quick demonstration of how TouchGraph? can be used to visualize a Wiki. The current demo renders the MeatBall Wiki LinkDatabase, but any database encoded in a similar format could be displayed."
Intresting one that showed up in a WikiForum email.
As mentioned in a later email could be a good starting point for a WikiRefactoring tool.
And it would have been nice to have been able to forward the email to an email address and have it posted ;)