Chris Jay Hoofnagle, Jennifer M. Urban, and Su Li (UC-Berkeley): Privacy and Advertising Mail. From Archeology, a look at the top 10 discoveries of 2012. Geoffrey Best reflects on a lifetime collecting books and the difficulties — emotional and financial — of parting with them. Israeli billionaire Dan Gertler — a friend of Congo's president — has amassed a fortune via private deals for mining assets in the world's most destitute nation. An interview with Jared Diamond, author of The World Until Yesterday: What Can We Learn from Traditional Societies? Guns and the pain economy: James Livingston on how love for the NRA and survivalism fits into an old pattern. Why won’t we talk about violence and masculinity in America? Soraya Chemaly wants to know. A rule is to break: A Child's Guide to Anarchy angers the Tea Party. From Cato Unbound, Howard Ball on physician assisted death in America: Ethics, law, and policy conflicts. In praise of empty souls: Martha Stout reviews The Wisdom of Psychopaths: What Saints, Spies, and Serial Killers Can Teach Us About Success by Kevin Dutton. Why are we afraid of homeless people? Madison Moore wonders.