Personal vs. commercial content

Frank Bentley, Crysta Metcalf, Gunnar Harboe
2006 Proceedings of the SIGCHI conference on Human Factors in computing systems - CHI '06  
doi:10.1145/1124772.1124871 dblp:conf/chi/BentleyMH06 fatcat:sjuripsbb5h6nazns27rkw2elq