Alex Shapiro created a Touch Graph Wiki Graph Browser which reads a db of Wiki links to generate a graph view, with the "current" page content on the side. Very cool, though dependent on a link-db that few wiki engines maintain. But imagine using this over a cluster of wikis, with a different color for each one, and the graphs crossing when the same Wiki Name was used in multiple Sister Sites. But not sure how well this would scale visually, even for a single wiki with a large number of pages.
A visualization of wiki clusters would be great, I agree! Could there some progress been achieved? Or do you know about experiments of textual wiki clustering at least? firstname.lastname@example.org
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