Niklas Elmqvist Philippas Tsigas TrustNeighborhoods: Visualizing Trust in Distributed File Sharing Systems. 107-114 2007 conf/vissym/2007 EuroVis http://dx.doi.org/10.2312/VisSym/EuroVis07/107-114 db/conf/vissym/eurovis2007.html#ElmqvistT07