Cape Town - Manchester United have made their Twitter debut, becoming the last Premier League club to join the micro-blogging site.According to The Guardian website, the club launched its official Twitter account on Wednesday morning and currently have in excess of 350 000 followers. United's first tweet read, "New era, same spirit. The season starts here. Let's do this."Manchester United have to date resisted launching an official Twitter account, despite having a considerable presence on Facebook, where it has 34 million "likes".One reason for now launching on Twitter is that the club is thought to be close to appointing a social media campaign manager.The 20-time English champions are expected to overtake Chelsea with 2.39 million and Arsenal with 2.5 million followers in due course.Real Madrid, with 8.1 million followers, and Barcelona, with 9.4 million followers, are the world's leading football clubs on Twitter.