It's 3 days old but I could not find it in HN archives. If it is a duplicate, I apologize.

The authors build a graph of connections based on the email headers (from the full hacked set), draw the graph and identify hubs/authority scores.

It's kind of lame that Microsoft Seadragon opens this massive picture up in a 680x330 pixel unresizeable viewport on my 3520x1200 display. At least it links to the original.

@thwarted, there's a fullscreen button in the lower right.