from the BBC : Wikileaks * Whistle-blowing website with a reputation for publishing sensitive material * Run by Julian Assange, a secretive Australian with a background in computer network hacking * Released 90,000 secret US records of US military incidents about the war in Afghanistan and 400,000 similar documents on Iraq * Also posted video showing US helicopter killing 12 people - including two journalists - in Baghdad in 2007 * Other controversial postings include screenshots of the e-mail inbox and address book of US vice-presidential candidate Sarah Palin