Marco Viviani is currently a postdoctoral researcher at the University of Insubria, Italy, on topics connected to Trust Management in the Social Web. He acquired a Ph.D. in Informatics from the Universita degli Studi di Milano (University of Milan, Italy) in February 2008. In 2009, he obtained a one-year postoctoral research fellow at the Universite de Bourgogne/Le2i (Dijon, France). In 2010, he obtained a two-year postoctoral research fellow at the Institut National des Sciences Appliquees/Liris (Lyon, France). Marco Viviani has been involved in several research projects. His main topics of interest include Trust Management, Trust and Reputation Systems, Social Network Analysis, User Modeling, Knowledge Extraction and Management, Distributed Systems, and Fuzzy Logic. On these topics he has written several international publications.