Der Institute for Information Systems and New Media at the University of Siegen is investigating into innovative ICTs, especially in the practice fields of cooperative work, community support, entertainment, ageing societies, and sustainability. In doing so, we contribute to the research fields of Human Computer Interaction, Computer Supported Cooperative Work, Ubiquitous Computing, and Software Engineering. The investigations into innovative ICTs in specific domains are related to each other via cross-cutting issues. These issues are currently ubiquitous and software technologies, methods of participatory design, end-user development, integration of organization and technology development, and the foundations of design science.