If this doesn't define what TOR really is, what does?

http://www.ibtimes.co.uk/playpen-us-doj-drops-child-porn-case-against-jay-mi... "The US Department of Justice (DoJ) has decided to drop its case against Jay Michaud, accused of accessing the notorious and now defunct dark web child pornography website Playpen, instead of sharing the classified technology used to locate thousands of suspects visiting the site."