Luca Bruno/AP
Australia striker Mitchell Duke, right, celebrates with team-mate Jackson Irvine after scoring against Tunisia.
Coach Graham Arnold has branded social media as “shite” which could have killed Australia’s World Cup campaign.
The Socceroos are under strict orders to curtail their social media use in Qatar with Arnold fearful of its impact on their mental health.
It was a lesson learnt by Arnold when coaching Australia’s under-23…