COOP'10 is the 9th edition of the International Conference on Designing Cooperative Systems, being the second European conference in the field of Computer Supported Cooperative Work. The conference brings together researchers who contribute to the analysis and design of cooperative systems and their integration in organizational community, public and other settings, and their implications for policy and decision-making. Cooperative systems design requires a deep understanding of collective activities, involving both artifacts and social practices. Contributions stem from a wide range of domains contributing to the fields of cooperative systems design and evaluation: CSCW, HCI, Information Systems, Knowledge Engineering, organizational and management sciences, sociology, psychology, anthropology, ergonomics, linguistics. This book presents theoretical contributions, empirical studies reports, software development experiences, and innovative concepts on the following topics: •Distributed design and distributed social awareness •Artifact-Centered Design in Healthcare •Practices Analysis and Digital Platform Design •Disaster Response Process Management Systems •Content-based image retrieval scenarios •Collaborative Multimedia Annotation •Photo Usage in Archaeology •Structuring Group Tasks through Negotiating Resources •Social Capital and Cooperation Infrastructures within Microfinance •Democratic Decision-Making mediated by an Online Social Environment •Computer Enabled Social Movements •Appropriation of the Eclipse Ecosystem •Collective Efficacy in Scientific Communities •Laboratory Notebooks •The concept of 'work' in CSCW.