WHO is the Zombie behind ZOMBIETIME? He claims to be a "photoblogger" who lives in San Francisco. For fun, he attends protests by people of opposite political inclinations to his own — the extreme left. He turns their placards against them, takes photographs and posts the images on his site. In this vein, his happy snaps of the 2006 World Naked Bike Ride are well worth a look. But recently he has turned investigator, challenging photo agencies such as Reuters over the alleged manipulation of images and — infamously — arguing that the bombing of an ambulance in Lebanon was...