Social media apps and platforms can offer many positive benefits to users: connecting with friends and families; participating in clubs and community events; social and political activism; setting up and participating in communities of interest; as sources of information and advice; and as a creative outlet. Social media participation rates continue to increase strongly. These platforms are still relatively new and there is much to learn about their impact on our physical and mental health, well-being, loneliness or connectedness. Furthermore, countries are still figuring out how best, or even whether, to regulate these platforms, how to respond to negative content and behaviours from social media users, and how to protect those who are the focus of negative content or harmful communications.