The more I look at FedWiki, the more overlap I see with the work Dave has been doing with outliners and publishing. Especially with Trex and the World Outline.
The World Outline is like the World Wide Web, except instead of a web of linked pages, it's an array of outlines that include other outlines. The outlines can live anywhere on the Internet. They are accessed over HTTP.
I released an experiment opml.wiki that consumes FedWiki JSON files and turns them into an OPML file. Seeing this hybrid gives me all sorts of ideas. I see these two platforms as three-dimensional representations of a four-dimensional object.
Add in a good helping of the semantic web utopia, stir, and let it simmer.