The other night, P2P research got brought up in conversation, /. just had a recent discussion on Random Walkers. There’s no doubt that there’s a lot of interesting stuff going on w/ P2P networks (Personally, I’m more interested in the Reputation System and metadata aspects, but the pure network topology stuff is pretty neat as well). Some random links: p2p-hackers, OpenP2P.com, infoAnarchy, Ben Houston’s P2P Idea Page, Free Haven Project Papers, Freenet Papers, boing-wiki P2P Technology, University of Cincinnati Network Visualization Research, www.networkgeography.org