Researchers from distributed computing, networks, agents and databases have also become excited about the P2P vision, and papers tackling open problems in this area have started appearing in high-quality conferences and workshops.

Invited Talk.- Design Issues and Challenges for RDF- and Schema-Based Peer-to-Peer Systems.- Structure in P2P Networks.- SIL: Modeling and Measuring Scalable Peer-to-Peer Search Networks.- Searchable Querical Data Networks.- Semantic Overlay Clusters within Super-Peer Networks.- Structuring Peer-to-Peer Networks Using Interest-Based Communities.- Semantics and Data Integration.- A Robust Logical and Computational Characterisation of Peer-to-Peer Database Systems.- Semantic Data Integration in P2P Systems.- Defining Peer-to-Peer Data Integration Using Both as View Rules.- Coordinating Peer Databases Using ECA Rules.- Data Streams and Publish/Subscribe.- An Adaptive and Scalable Middleware for Distributed Indexing of Data Streams.- Building Content-Based Publish/Subscribe Systems with Distributed Hash Tables.- Data Structures and Query Processing.- AmbientDB: Relational Query Processing in a P2P Network.- Towards a Unifying Framework for Complex Query Processing over Structured Peer-to-Peer Data Networks.- Distributed Queries and Query Optimization in Schema-Based P2P-Systems.- PePeR: A Distributed Range Addressing Space for Peer-to-Peer Systems.- Efficient Search in Structured Peer-to-Peer Systems: Binary v.s. K-Ary Unbalanced Tree Structures.- Content-Based Overlay Networks for XML Peers Based on Multi-level Bloom Filters.