Recent developments in new media devices and applications have led to the rise of what have become known as ‘social media’, ‘Web 2.0’, ‘social computing’ or ‘participative web’. This shift in ICT, from unidirectional to conversational media of mass self-communication has lowered the technological thresholds for everyday users to cooperate for their own benefit, to participate in online environments and social network sites, to co-create business value and to become ‘produsers’ or ‘pro-ams’. At the same time, we see an evolution towards people-centred design and user-driven innovation in the design of new media technologies. This has created new opportunities and heightened expectations regarding user empowerment in different societal arenas. However, the question remains to what extent users and communities interacting in an all-IP new media ecosystem are empowered (and not disempowered) to express their creativity and concerns in their social and cultural environment and to obtain a prominent role in the process of new media design and innovation. The book attempts to answer this question through a collection of chapters that scrutinise this issue. The different chapters focus on the way that social and economic opportunities and threats enable and/or constrain user empowerment. This work consists of four major sections, each of which examines the (potential) empowerment/disempowerment of users in relation to new media technologies from a different angle. The chapters in the first section describe different theoretical perspectives on user roles and user involvement in the new media ecosystem, referring to interpretative, positivist and critical schools of thought. Based on these overall guiding frameworks, we then explore the leverage users have, both on content level and on technological level. This refers respectively to the second and third section of the book. In the fourth section different case studies are presented, each of which highlight how user empowerment manifests itself in different new media sectors and environments (such as publishing, the music industry and social networking sites). The book is based on interdisciplinary research. It offers innovative insights based on state-of-the-art academic and industry-driven ICT user research in various European countries. This work will appeal to post-graduate students and researchers in the field of media and communication studies, social studies of technology, digital media marketing and other domains that investigate the mutual relationship between new media technologies and society.