Collective Action 2.0 explores the issues related to information and communication technologies (ICTs) in detail, providing a balanced insight into how ICTs leverage and interact with collective action, which will have an impact on the current discourse. Recent events in different authoritarian regimes, such as Iran and Egypt, have drawn global attention to a developing phenomenon in collective action: People tend to organize through different social media platforms for political protest and resistance. This phenomenon describes a change in social structure and behavior tied to ICT. Social media platforms have been used to leverage collective action, which has in some cases arguably lead, to political revolution. The phenomenon also indicates that the way information is organized affects the organization of social structures with which it interoperates. The phenomenon also has another side, which is the use of social media for activist suppression, state and corporate surveillance, commodifi cation of social processes, demobilization, or for the mobilization of collective action toward undesirable ends.