The emergence of network facilities and the increased availability of personal computer systems over the last decade has seen the development of interest in the use of computers to support cooperative work. This volume presents the proceedings of the fifth European conference on Computer Supported Cooperative Work (CSCW). This is a multidisciplinary area which embraces both the development of new technologies and an understanding of the relationship between technology and society. This volume contains a collection of papers that encompass activities in the field. It includes papers addressing distribute virtual environments, the use of the Internet, studies of work and emerging models, theories and techniques to support the development of cooperative applications. The papers present emerging technologies alongside new methods and approaches to the development of this important class of applications. The work in this volume represents the best of the current research and practice within CSCW. The collection of papers presented here will appeal to both researchers and practitioners alike, as they combine an understanding of the nature of work with the possibilities offered by new technologies.

On behalf of the Organizing Committee for Pervasive 2008, welcome to the proceedings of the 6th International Conference on Pervasive Computing. The year2008wasthesecondtimeinasmanyyearsthatthePervasiveconferencehas attempted to "globalize" For the second year in a row the conference was held outside of Europe. The conference is seen as one of the most respected venues for publishing researchon pervasive and ubiquitous computing and captures the state of the art in pervasive computing research. In 2008, as in previous years, the proceedings present solutions for challenging research problems and help to identify upcoming research opportunities. Pervasive 2008 attracted 114 high-quality submissions, from which the Te- nical Program Committee accepted 18 papers, resulting in a competitive 15. 8% acceptance rate. There were over 335 individual authors from 27 countries, c- ing from a wide range of disciplines and from both academic and industrial organizations. Papers were selected solely on the quality of their peer reviews using a double-blind review process. The review process was carried out by 38 members of the international Technical ProgramCommittee (TPC) who are - perts of international standing. The TPC members were aided by 104 external reviewers. It wasa rigorousreviewprocess, in whicheachpaper had atleastfour reviews: three reviews provided by by the Committee members and one review written by an external reviewer. The reviews were followed by a substantive - liberation on each paper during an electronic discussion phase before the start of the Committee meeting.