Preface; 1 Public Services Online; 2 The Need for Digital Health; 3 Health and Medicine Online: A Diversity of Applications; 4 Digital Health on the Web; 5 Digital Health Via Kiosks; 6 Digital Health on Television: Early Adoption and Use; 7 Digital Health on Television: Service Usability and User Psychology; 8 Digital Health: Perceived Benefits and Health Impact; 9 Digital Health: Public Confidence and Trust in Sources; 10 The Future Potential of Digital Health; References; Author Index; Subject Index;