London: Nineteen-year-old men are the biggest victims of online bullying, the majority of which takes place on popular social networking site Facebook, a new UK study has claimed.

After Facebook, Twitter was the next most frequent face for bullying - or trolling - to take place, according to the study of more than 2,000 teenagers by Opinium Research.

The study revealed that 85 per cent of 19-year-old men had experienced some form of online bullying.

Of those who admitted they had been bullied, 87 per cent said it had happened on Facebook, 19 per cent on Twitter and 13 per cent on BlackBerry Messenger.

Of all the teenagers who said they had been bullied, only 37 per cent had reported it to the social network where it took place.

Only 17 per cent said that their first reaction would be to tell their parents, and just 1 per cent said it would be to tell their teacher, The Telegraph reported.

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