Eugenia Mitchelstein is Associate Professor and Chair of the Social Sciences Department the University of San Andrés in Buenos Aires, Victoria, Argentina, and Co-Director of the Center for the Study of Media and Society in Argentina (MESO). She has authored two books, one edited volume, and more than thirty journal articles.

Pablo J. Boczkowski is Hamad Bin Khalifa Al-Thani Professor in the Department of Communication Studies at Northwestern University, USA. He is the author of six books, four edited volumes, and more than sixty journal articles. His latest book (forthcoming) is To Know Is to Compare: Studying Social Media Across Nations, Media and Platforms (with Mora Matassi).