Australian Prime Minister Scott Morrison has declared that social media companies should be held accountable for any harm done when anonymous users post “their vile rubbish” on their sites. “They’re publishers, not just platforms,” he said, referring to social media companies. Morrison made his remarks on Thursday ahead of his trip to the Group of 20 (G20) leaders summit in Rome, where he will urge world leaders to take up the issue with social media giants. The prime minister told reporters in Canberra that he wants the rules that apply in the real world to apply in the digital world in regards to harmful comments made online by users. “Particularly when they allow people to anonymously go on their platforms and publish their vile rubbish,” Morrison said. “Whether that is to bully a young girl or target people online, or to push … defamatory statements out against people, and to …