Facebook describes bullying as
Bullying is any kind of repeated aggressive behaviour that involves an imbalance of power such as social status or physical size. Along with physical or verbal attacks, bullying also includes making threats, spreading rumours or deliberately excluding someone from a group.
and is providing advice for teens, parents/guardians, and teachers, including advice on how to deal with bullying, how to report bullying, and how to block/remove ‘friends’.
Read more about it in the Telegraph, or go to the pages on Facebook.
