In the past 20 years, 'new media' has emerged as one of the most dynamic research fronts in media and communication, addressing the diversity and proliferation of new information and communication technologies and their social contexts. This growing field is both international and transdisciplinary. The editors have mined a rich collection of published material covering the historical, economic, social and behavioral issues at stake to trace the development and implications of new media. Volume I: Visions, Histories, Mediation The first volume offers an historical overview, as well as the 'visions' of a society influenced by new media put forward by such influential scholars as McLuhan, Innis, and Debord. Volume II: Technology: Artifacts, Systems, Design The second volume introduces new media as comprised of artefacts (technologies, hardware, systems themselves) and how they are designed and made. Volume III: Practices: Interaction, Identity, Organizing, Culture The third volume focuses on practices of communication, or what people do to communicate. This volume covers human interaction, organizing, identity, and cultural practices. Volume IV: Social Institutions, Structures, Arrangements The fourth volume covers the social 'arrangements' behind new media.