Germany

Kefk Network, http://www.kefk.net/P2P/Website/Language/index_de.asp

Looks like a very well documented scientific website about various aspects of P2P

CoForum, http://coforum.de

Wiki dedicated to all aspects of a cooperative culture (which may be essentially synonym to p2p culture).

keimform.de, http://www.keimform.de

A group weblog discussing and analyzing the emergence and spreading of new particitory and open approaches in all areas of life – software development, content production, (non-)education, material production, and beyond. Main authors: Benni Bärmann, Christian Siefkes, Stefan Meretz, Thomas Berker, Thomas Kalka.

Freie-Gesellschaft-Wiki (Free Society Wiki), http://www.freie-gesellschaft.de/wiki/Hauptseite

The goal of this wiki is to find out whether and in which ways commons-based peer production has a potential that extends beyond the areas of free software and open content production where it has first emerged. It this just a phenomenon of limited relevance, or might it one day cover all aspects of production? Is a society possible in which peer production is the primary mode of production? If so, how could such a society be organized?