How many things did you reveal about yourself online today? I Know Who You Are and I Saw What You Did: Social Networks and the Death of Privacy (Free Press, $26.00) by law professor Lori Andrews reveals that the same information sharing that can bring down governments can also topple a person’s career, marriage, finances, and future. Anderson provides an astonishing list of online privacy abuses, then makes a compelling case for a social network constitution. Andrews is a law professor and the director of the Institute for Science, Law and Technology at Illinois Institute of Technology. She has served as a regular advisor to the U.S. government on ethical issues regarding new technologies, and was the chair of the federal committee concerning ethical and legal issues concerning the Human Genome Project.