Evaluating the legitimacy of platform governance: A review of research and a shared research agenda

This article provides an overview of the key values that we argue should underpin an index of the legitimacy of the governance of online intermediaries. The aim is ultimately to allow scholars to rank the policies and practices of intermediaries against core human rights values and principles of legitimate governance in a way that enables comparison across different intermediaries and over time. This work builds on the efforts of a broad range of researchers already working to systematically investigate the governance of social media platforms and telecommunications intermediaries. In this article, we present our review and analysis of the work that has been carried out to date, using the digital constitutionalism literature to identify opportunities for further research and collaboration.