Approximate Object Location and Spam Filtering on Peer-to-Peer Systems / Feng Zhu, Li Zhuang, Ben Y. Zhao, Ling Huang, Anthony D. Joseph and John Kubiatowicz — Efficient Peer-to-Peer Keyword Searching / Patrick Reynolds and Amin Vahdat — NaradaBrokering: A Distributed Middleware Framework and Architecture for Enabling Durable Peer-to-Peer Grids / Shrideep Pallickara and Geoffrey Fox — A Framework for Event Composition in Distributed Systems / Peter R. Pietzuch, Brian Shand and Jean Bacon — Content Distribution for Publish/Subscribe Services / Mao Chen, Andrea LaPaugh and Jaswinder Pal Singh — Supporting Mobility in Content-Based Publish/Subscribe Middleware / Ludger Fiege, Felix C. Gartner, Oliver Kasten and Andreas Zeidler