As of 2008, the center of English Wikipedia is the article 2007. From that article, it takes on average 3.45 clicks to get to any of the 2,111,479 articles reachable from it. Disregarding all of the articles that are just lists, years or days of the year, the "real article" closest to the center is United Kingdom, at an average of 3.45 clicks to anywhere else. from http://en.wikipedia.org/wiki/Six_degrees_of_separati…
I find this absolutely fascinating. Consider that the reason we're at the centre of the world map is because we had the power to choose to put ourselves there, at the point in history when the maps were being drawn.
Is that imperial influence, long since waned, still echoing across the years, visible in the wikipedia graph?