CSCW focuses on enhancing our understanding of the practices of cooperative work and on exploring and designing CSCW systems. The ECSCW conference is an important venue for defining and further developing the agenda for CSCW research. The conference has a longstanding interest in empirical, conceptual and theoretical contributions and has a tradition of inclusiveness. ECSCW addresses themes which include but are not limited to: - Conceptualising practice in work and other activities, and the relationship between understanding practice and the design of computer artifacts: how can we understand work (the "W")? - Cooperation and its characteristics (e.g., describing the particulars of articulation work and coordination mechanisms in a given setting): how can we understand cooperative work (the "CW")? - Methods for investigating human practices: the nature of ethnography and the role of other innovative methods in CSCW. - Digital and other material artefacts in cooperative settings: how can we support cooperative work in increasingly complex, networked settings (the "CS")?