This book constitutes the thoroughly refereed post-proceedings of the Second International Conference on Persuasive Technology for Human Well-Being, PERSUASIVE 2007, held in Palo Alto, CA, USA, in April 2007.

The 37 revised full papers presented were carefully reviewed and selected from numerous submissions for inclusion in the book. The papers are organized in topical sections on technology that motivates health behavior, persuading people with video games, new form factors for persuasive technology, surrounded by high-tech persuasion, controlling people by using digital punishment, technology that motivates groups to unify, how peers influence you online, new insights into web persuasion, persuasive agents on the screen, using digital images to persuade, persuasion via mobile phones, insights into persuasion principles, and perspectives on persuasive technology.