D&D Map of Online Communities

XKCD map (detail)

XKCD’s map of online communities purports to represent the estimated size of each community by geographic area; more noteworthy is that it’s in the style of a D&D (or fantasy trilogy) map and has lots of little in-jokes, web-related or otherwise — see, for example, “The Compass-Rose-Shaped Island.” Via Boing Boing.