Chapter 2. Emergent Evaluation Criteria for Collaborative Learning Environment
Ibrahiem M. M. El Emary

Chapter 3. Evaluating and Enriching Online Knowledge Exchange: A Social Epistemological / Lay Epistemics Perspective
Paul Matthews and Judith Simon

Chapter 4. Organizational Design of Online Communities
Nick Glezakos and Athina Lazakidou

Chapter 5. A Security Model for Virtual Healthcare Communities
Anargyros Chryssanthou, Iraklis Varlamis, and Charikleia Latsiou

Chapter 6. Cybernationalism: Terrorism, Political Activism, and National Identity Creation in Virtual Communities and Social Media
Matthew Franklin Palmer

Chapter 7. E-Government and Data Protection in the Public Sector
Mary Lampri

Chapter 8. Building SCIENAR, a virtual community of artists and scientists: usability testing for the system improvement
Iole Alfano, Manuela Carini, and Lorella Gabriele

Chapter 9. User-Generated Content for Location-Based Services: A Review
Lee Fueng Yap, Masahiro Bessho, Noboru Koshizuka and Ken Sakamura

Chapter 10. Generating Social Awareness through Social Network Sites
Penelopi Alexandrou

Chapter 11. Markov Random Field and Social Networks
Stelios Zimeras

Chapter 12. Mobile Communities - Current Status and Challenges
Volkmar Schau , Kathrin Kirchner , Christian Stolcis, Christian Erfurth, Gerald Eichler, and Wilhelm R. Rossak

Chapter 13. Social Networks in Environmental Epidemiology
Stelios Zimeras and S. Geronikolou