Elena Simperl works as a Senior Lecturer at the University of Southampton in the UK.She has been active as a SemanticWeb researcher for almost a decade, authoring over 75 publications, and serving as Chair in several relevant scientific conferences, such as the European SemanticWeb Conference, which she coordinated as General Chair in 2012. Elena has been involved in over 20 European and national projects in the field of semantic technologies. Among others she led the European research project INSEMTIVES, which dealt with questions related to this book. Roberta Cuel is an Assistant Professor of Organization Studies in the Faculty of Economics, University of Trento in Italy. Her research interests aim at discovering the interdependencies between technology and organizations, in particular the impacts of innovative technologies on teams, communities, and organizational models, the study of distributed tools and processes which allow organizational learning and knowledge management, and knowledge representation systems as mechanisms for knowledge reification processes. She has a PhD in organization and management from the University of Udine and has written a number of chapters in books, as well as articles in international journals and has served as a Program Committee member for various interdisciplinary conferences. Martin Stein studied Information Systems at the University of Siegen in Germany. During his studies he worked on different nationally and EU-funded projects. He wrote his diploma thesis on the topic of "Motivation for Participation - Meta Data Creation for the Eclipse Ecosystem". Since 2010 he has been working as a research associate at the Institute for Information Systems and New Media at the University of Siegen. His research interests are HCI, ambient assisted living and design for the aging society.