The goal of the workshop is to examine peer-to-peer technologies, applications, and systems, and also to identify key research issues and challenges that lie ahead. In the context of this workshop, peer-to-peer systems are characterized as being decentralized, self-organizing distributed systems, in which all or most communication is symmetric. Topics of interest include, but are not limited to:

• peer-to-peer applications and services
• peer-to-peer systems and infrastructures
• peer-to-peer algorithms
• security in peer-to-peer systems
• robustness in peer-to-peer systems
• anonymity and anti-censorship
• performance of peer-to-peer systems
• workload characterization for peer-to-peer systems
• experience with deployed peer-to-peer systems

The workshop aims to bring together researchers and practitioners in the fields of systems, networking, and theory. The program of the workshop will be a combination of invited talks, presentations of position papers, and discussions. To ensure a productive workshop environment, attendance will be limited to about 50 participants who are active in the field.

Each potential participant should submit a position paper of 5 pages or less that exposes a new problem, advocates a specific solution, or reports on actual experience. Two columns are acceptable, but the font size must be no smaller than 11pt. Participants will be invited based on the originality, technical merit, and topical relevance of their submissions, as well as the likelihood that the ideas expressed in their submissions will lead to insightful technical discussions at the workshop. Please do not submit abbreviated versions of journal or conference papers. In particular, submissions to IPTPS should not be concurrent with a substantially similar submission to a conference, including condensed versions of work that has been submitted to a conference and is currently under review.

A post-proceedings of the workshop will be published by Springer-Verlag in their LNCS Hot Topics series.