From Spring 2025, this subject is replaced by INFS 3027 Social Computing and Systems Thinking. Rapid growth of computational devices connected to the internet such as mobile phones, tablets, personal computers have made us into a digitally connected society. This has enabled us to develop a new computing paradigm: Social Computing to enhance ways we can fulfil a range of primary and secondary human needs. Already many new businesses have evolved making use of these possibilities surpassing the number of users in corresponding conventional businesses such as retail, transportation and hotel chains. In this subject students will learn the fundamental concepts of Social Computing, how Social Computing is evolving, explore interaction models of social networks, analyse a few reported cases that relate to social computing in detail to understand the impact on society and businesses and explore ways to enhance a range of livelihood activities and future possibilities. This subject will also cover underpinning technologies related to social computing such as Web 2.0, knowledge management and related ethical, security and privacy issues.