The High Court of Australia has cast doubt on media companies’ claims that they are not responsible for defamatory comments on their social media posts. Fairfax Media and News Corp have taken the matter to the High Court, after a NSW Court of Appeal found they were liable for defamatory material in Facebook comments on their posts about the incarceration of juvenile offender Dylan Voller. The Court of Appeal had ruled that the media companies were the primary publishers of third-party comments on their public social media pages, and therefore, could not rely on…