Aljosha Karim Schapals is Senior Lecturer in Journalism, School of Communication, Queensland University of Technology (QUT), Australia, where he is Chief Investigator in the Digital Media Research Centre (DMRC). He is Reviews Editor for Media International Australia and the author of Peripheral Actors in Journalism. He has published articles in journals including Digital Journalism and Journalism Practice, and served as Lead Editor of Digitizing Democracy. Christian Pentzold is Chair and Professor of Media and Communication, Department for Communication and Media Studies, Leipzig University, Germany. He has published widely in journals such as Media, Culture & Society, New Media & Society, Digital Journalism, and Convergence. He has edited several books including the Handbook of Peer Production, part of the Wiley-Blackwell Handbooks in Communication and Media series.