Contents -- Acknowledgments -- Introduction to Virtual Knowledge -- The Changing Research Context -- The Emergence of Virtual Knowledge -- Outline of the Book and Common Themes -- References -- Chapter 1: Authority and Expertise in New Sites of Knowledge Production -- Expertise and Authority -- Institutional-Infrastructural Reproduction and Innovation -- Three Dimensions of Knowledge Production -- Authorizing Actors and the Tropenmuseum's Networked Image Database -- Re-Negotiating Authority -- Authorizing Empirical Encounters in Flickr -- Validation of Knowledge Claims and Expertise in the Cultural Biography of Maastricht -- Conclusions -- References -- Chapter 2: Working in Virtual Knowledge -- The Changing Nature of Labor and Scholarly Work in the Digital Age -- Introducing the Cases -- Care Work -- Articulation Work -- Persuasion Work -- Conclusion -- Notes -- References -- Chapter 3: Exploring Uncertainty in Knowledge Representations -- Uncertainty in the Natural Sciences, the Humanities, and the Social Sciences -- Examples: Uncertainty in Representations of the World -- Strategies for E-Research and the Need for Experiments with Interfaces, Interactions, and

Formal Scholarly Communication -- Informal Scholarly Communication -- Conclusion -- Notes -- References -- Chapter 7: Virtual Knowledge in Family History -- The Role of Dreams in Research -- Dreams and Practices of Computational Family History -- Notes -- References -- About the Authors -- Index.