S. Ries, J. Kangasharju, und M. Mühlhäuser. On the Move to Meaningful Internet Systems 2006: OTM 2006 Workshops, Volume 4277 von Lecture Notes in Computer Science, Seite 894--903. Berlin/Heidelberg, Springer, (2006)
Trust is a promising research topic for social networks, since it is a basic component of our real-world social life. Yet, the transfer of the multi-facetted concept of trust to virtual social networks is an open challenge. In this paper we provide a survey and classification of established and upcoming trust systems, focusing on trust models. We introduce a set of criteria as basis of our analysis and show strengths and short-comings of the different approaches.