What travels faster than light? Gossip on social media. Remember in 2012 when a fake report on Amitabh Bacchan dying in a car crash was doing the rounds on social media? Or the Twitter hoax suggesting Justin Bieber has cancer and the pop star has urged his fans to go bald. #BaldforBieber started to trend in the US and many of his fans ( particularly teenage girls) shaved their heads in solidarity.