moved from BiggestWiki
The structure of wikis is interesting. How are the page inter-linked? There is an example in http://seattlewireless.net/index.cgi/HowDoesThisWikiLookLike The number of links per page (references to other pages or references from other pages) seems to follow a PowerLaw distribution.
There are more examples (in French) on http://reseaucitoyen.be/index.php?TopologieDuWiki
The 29th of August 2002, SeattleWireless looked like http://seattlewireless.net/index.cgi/HowDoesThisWikiLookLike :

with the references counts distribution like this :

raw data is in http://users.skynet.be/chricat/topologie/SeattleWireless-29aug2002.txt and a zoomable graph in http://users.skynet.be/chricat/topologie/SeattleWireless-29aug2002.pdf (29aug2002).
See also HowDoesThisWikiLook, TouchGraph, TouchGraphWikiBrowser