Super-Peer-Based Routing and Clustering Strategies for RDF-Based Peer-to-Peer Networks
http://citeseer.ist.psu.edu/nejdl02superpeerbased.html

Abstract:
RDF-based P2P networks have a number of advantages compared with simpler P2P networks such as Napster, Gnutella or with approaches based on distributed indices such as CAN and CHORD. RDF-based P2P networks allow complex and extendable descriptions of resources instead of fixed and limited ones, and they provide complex query facilities against these metadata instead of simple keyword-based searches. This has been added to the P2P section of Deep Web Research Subject Tracer™ Information Blog.