Is this a real turning point? The British government is bringing in tough new social media laws to protect teenagers from harmful content. But some wonder whether they go far enough.
UK could ban under-18s from social media
Worrying: It is estimated that around a third of teenagers online already lie about their age. Glossary
Ofcom - The Office of Communications regulates broadcasting, telecommunications and the postal industry in the UK.
Cyberbullied - Harassed or bullied by others online, whether through rumours, threats or posting personal information about a victim.
US Congress - The United States Congress is the organisation that makes laws in the United States.