It's been about five months since Rupert Murdoch first claimed that he would block search engines from News Corp. content, and even if not a lot's happened as a result, Murdoch hasn't let the matter slide. He issued another warning yesterday while at the National Press Club. "We are going to stop people like Google or Microsoft or whoever from taking stories for nothing . . . there is a law of copyright and they recognise it," Murdoch said according to Paul Harris .