Virtuality and Virtualization -- Keynotes -- Beyond Distributed Cognition -- Dig the Dirt -- Frameworks for Understanding Virtuality and Virtualization -- Conceptualizing Virtual Collaborative Work -- Conduct, Performance, and Dilemmas of Inter-organizational Virtual Organizing -- Process Issues to Achieve Virtualization -- Structuring Virtuality -- Competency Rallying Processes in Virtual Organizations -- Spatial and Temporal Boundaries in Global Teams -- Coordinating Global Software Development Activities -- The Tension Between Expectations of Availability and the Reality of Availability in Hybrid Teams -- A Process Maturity Model for Geographically Dispersed Software Sustenance Operations -- Group Processes in Virtual Teams -- A Structurational Perspective on Leadership in Virtual Teams -- Ambassadorial Leadership -- The Presentation of Self in a Virtual but Work-related Environment -- Understanding Virtuality -- Conditions Enabling Effective Multiple Team Membership -- Knowledge and Virtuality -- Learning Triggers in Virtual Groups -- Sharing Knowledge in Global Virtual Teams -- The Practice of e-Science and e-Social Science -- From Senses to Sensors -- Expertise Management in a Distributed Context -- The Role of Fiction in Structuring Virtuality -- Building Virtual Spaces -- Refraining Online Games -- Virtualizing the Virtual -- Panels -- Virtualization and Institutions -- Exploring the Nature of Virtuality -- The Social in the Virtual -- The Role of Shapers in Knowledge-Sharing -- Game Architecture and Virtual Teamwork -- The IT Artifact and Telecommuting -- Virtual Patients.