Far from being neutral, social media platforms – such as Facebook, Twitter, YouTube, and WeChat – possess their own material characteristics, which shape how people engage, protest, resist, and struggle. This innovative collection advances the notion of social media materialities to draw attention to the ways in which the wires and silicon, data streams and algorithms, user and programming interfaces, business models and terms of service steer contentious practices and, inversely, how technologies and economic models are handled and performed by users. The key question is how the tension...