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.