The SmallestFederatedWiki experiment is proceeding and a number of sites have been discovered
OpenDataAndVisualization
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This page lists some of the ones I know about:
* By c2 Persons
** WardCunningham
*** http://ward.fed.wiki.org
*** http://c2.fed.wiki.org
*** http://oscon.fed.wiki.org
** DonaldNoyes
*** http://don.fed.wiki.org
*** http://sites.fed.wiki.org
** GunnarZarncke
*** http://zarncke.fed.wiki.org
** PeteForsyth
*** http://peteforsyth.fed.wiki.org
** RonJeffries
*** http://ron.fed.wiki.org
** JohnFletcher
*** http://jfletcher.fed.wiki.org

*