The file-sharing network loses a big one in Australian court. “Kazaa, a programme estimated to be used for four out of five internet file-swaps, will have to include copyright filters in future editions of its software and put pressure on its current users to upgrade to the new version. More than 317 million people have downloaded Kazaa – which allows users to swap music, film and other digital information over the web – and several million are believed to be using it at any one time.”