I am a founder and regular committer to federated wiki. I run many sites on several servers but only loosely manage any particular community.
I can be reached by email to ward@c2.com.
I wrote Federated Wiki while I served as Nike's open-data fellow. I currently work for NewRelic in Portland, Oregon.
I'm enjoying reading more in the federation. Here is a place that I can fork content without concern for the information architecture that results.