Just how accurate are GPS-guided precision bombs, and what is most likely to send them off-target? Now you can find out by simply reading the smart bomb's tactical manual on the internet. No, the Pentagon didn't slip up and post the instructions online. Rather, a whistle-blower leaked the manual via Wikileaks, a website that uses anonymising technology to disguise the source of leaked information. Launched online in early 2007, Wikileaks is run by an informal group of open government and anti-secrecy advocates who want to allow people living under oppressive regimes, or with something to say in the public interest, to anonymously leak documents that have been censored or are of ethical, political or diplomatic significance. Thanks to Wikileaks, potential whistle-blowers are now far more willing to come forward, says John Young, who runs the long-standing site Cryptome.org, which specialises in posting documents on espionage, intelligence and cryptography issues. "We started getting a lot less information after 9/11 as people became more cautious when law enforcement agencies got more draconian powers. So we are very happy to see Wikileaks doing what they are doing so aggressively." This flood of leaked documents has been made possible by internet technology that allows whistle-blowers to post documents online without revealing their identity or IP address.