Persuasive Technology Second International Conference on Persuasive Technology, PERSUASIVE 2007, Palo Alto, CA, USA, April 26-27, 2007, Revised Selected Papers - Kort, Yvonne de; IJsselsteijn, Wijnand; Midden, Cees; Eggen, Berry; Fogg, B. J. (Springer Berlin Heidelberg, 2007)