I am currently extending wikit, the Tcl-based version of wiki (used by the Tcler's wiki) and will soon make the changes available.
I'm interested into the notion of people and networks, particulary in Lessig's idea of innovation related to the end-to-end argument and to lower cost of "proposing new schemes"; which involves new and interesting notions such as:
- a person's identity (or anonymity),
- communities, collaborations, e-vote, and also
- resources or capabilities management.
In this respect, Advogato is a very interesting experience, both for its contributions and for its founding ideas, and the Debian decentralized PKI is very interesting as well.