In a case of mistaken identity, a Melbourne man is suing Twitter for publishing tweets about him that were untrue. According to The Age,Joshua Meggitt, the Melbourne man wrongly named by writer and TV identity Marieke Hardy as the author of a hate blog dedicated to her, is now suing Twitter Inc itself.Mr Meggitt’s lawyer, Stuart Gibson, served a legal notice yesterday on the San Francisco-based social media giant, a company valued last year at $US7 billion ($A6.5 billion), as the publisher of a tweet by Hardy last November.