Ethical behaviour in technology-mediated communication / Sutirtha Chatterjee -- Codes of ethics in discussion forums / Cãlin Gurãu -- Privacy and security for virtual communities and social networks / Georgios Michaelides, Gábor Hosszú -- Cyber stalking: a challenge for web security / Alok Mishra, Deepti Mishra -- Increasing capital revenue in social networking communities: building social and economic relationships through avatars and characters / Jonathan Bishop -- Moving from cyber-bullying to cyber-kindness: what do students, educators and parents say? / Wanda Cassidy, Karen Brown, Margaret Jackson -- Online empathy / Niki Lambropoulos -- Politeness as a social computing requirement / Brian Whitworth, Tong Liu -- The psychology of trolling and lurking: the role of defriending and gamification for increasing participation in online communities using seductive narratives / Jonathan Bishop -- Negotiating meaning in a blog-based community: addressing unique, shared, and community problems / Vanessa Paz Dennen -- Social media (Web 2.0) and crisis information: case study Gaza 2008-09 / Miranda Dandoulaki, Matina Halkia -- A survey of trust use and modeling in real online systems / Paolo Massa -- The anonymity of the internet: a problem for e-commerce and a "modified" Hobbesian solution / Eric M. Rovie -- Online behavior modeling: an effective and affordable software training method / Charlie C. Chen, Terry Ryan, Lorne Olfman -- A proposed framework for designing sustainable communities for knowledge management systems / Lakshmi Goel, Elham Mousavidin -- The retaliatory feedback problem: evidence from eBay and a proposed solution / Ross A. Malaga -- Multiagents system applied on a cyberbullying model for a social network / Carlos Alberto Ochoa Ortiz-Zezzatti ... [et al.] -- Trust modeling and management: from social trust to digital trust / Zheng Yan, Silke Holtmanns.