Introduction -- Towards a Principle of Socio-Technical Interactions - Embracing Cultural Issues of Enterprise Culture through a Concept of Enterprise Activities -- The Human Factor in Computer Science and How to Teach Students to Care: An Experience Report -- Socially-Aware Traffic Management -- The Social Dimension of Information Ranking: A Discussion of Research Challenges and Approaches -- Using weighted interaction metrics for link prediction in a large online social network -- Integrated Modeling and Evolution of Social Software -- Social Network Analysis in the Enterprise: Challenges and Opportunities -- Assessing the Structural Fluidity of Virtual Organizations and its Effects -- Anonymity, Immediacy and Electoral Delegation in Socio-Technical Computer Systems -- Towards Acceptance of Socio-technical Systems? An Emphasis on the Requirements Phase -- Morals, IT-Structures, and Society.