
As a passive latecomer to Facebook, my contact clustering reflects a network crawl of preferential attachment (ref. Linked).
The circular layout makes it easy to read the names, and to see some interesting groupings (see overlay notes), but bogs down with a scribble of supernodes on the bottom left.
An alternative depiction is the 2D splat map used by Lumeta for the Internet and Gustavo for flickr networks.

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