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:
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.
FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
Keep up with the latest Advogato features by reading the Advogato status blog.
If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!