ABSTRACT
The contributions to this volume are organized according to shared ‘big themes’ we have identified in the research on Citizen Science and Citizen Humanities: Democratization, Divides, Drives, and Developments. This chapter reviews the contributions in each theme, noting the disciplinary domain, considering the approaches and outcomes, and relating these to topics in the museum and cultural heritage sector. Critical issues that emerge across disciplines include the use of democratization rhetoric; ethical issues of unpaid labor and the recruitment of disenfranchised citizens in data collection; questions of how to conceptually and methodologically scale up for public engagement at the community level; and the need for media and communication perspectives that can shed light on the epistemic, technological, and institutional features of interactions between researchers and citizens in different kinds of participatory and contributory infrastructures.