X, formerly Twitter, recently announced its official policy to allow consensual production and distribution of adult content. While the company says there are safeguards for those under 18, what impact does access to pornography online have on young people and whose job is it to deal with the consequences? Steven Chia and Crispina Robert get the facts from Tham Yuen Han, addictions specialist and executive director of WE CARE Community Services and Dr Shobha Avadhani, senior lecturer in communications and new media at the National University of Singapore