Why does cyber-bullying often happen between children who were friends?
Traditionally, when children 'fell out' with each other, they either waited until the following day or spoke over the phone to put things right. Unfortunately, text messages are more immediate (you can send one before you have thought it through), written (so they do not just go away) and do not usually reflect the feeling behind the message.
Similarly, children have always talked about each other behind their backs and swapped stories about each other etc. Electronic media, such as 'Facebook', allows conversations between a few people to be seen by many ? and throw away comments? are now written down for all to see.