Luke Sloan is Professor in the School of Social Sciences and Deputy Director of the Social Data Science Lab at Cardiff University UK ( http://socialdatalab.net/ ). His work focuses on exploring how social media data, specifically from Twitter, can be used for social scientific analysis with a particular focus on demographics, representation, and data linkage.

Libby Bishop is the Coordinator for International Data Infrastructures in the Data Archive for the Social Sciences at GESIS Leibniz-Institute for Social Sciences in Germany. GESIS is a service provider to the Consortium of European Social Science Data Archives (CESSDA). She coordinates activities involving staff from GESIS and other European research data infrastructures on topics such as digital behavioral data. She is also the Team Leader of the GESIS Metadata Standards and Interoperability Team. Her research explores the methodological and ethical challenges posed when curating data for sharing and reuse. Her most recent publication investigates differences between platforms and data types regarding informed consent for linking survey and social media data.

Johannes Breuer is a senior researcher in the team Survey Data Augmentation (department Survey Data Curation) at GESIS Leibniz Institute for the Social Sciences in Cologne, Germany, and (co-)leads the team Research Data and Methods at the Center for Advanced Internet Studies (CAIS) in Bochum, Germany. His current work focuses on the use of digital trace data in the social sciences as well as linking those with survey data. He received his Ph.D. in psychology from the University of Cologne. His main research interests include the use and effects of digital media, computational methods, data management, and open science.