Good point, definitely something to think about. That is a terrifying layer to bullying.
on the "ruining lives" front, i think facebook is very dangerous for kids... childhood has always been a rollercoaster of emotions but there was usually an escape, i.e. the end of the day. for kids who didnt do so well socially they could go home and escape the pressure (assuming their home situation was alright). now you are linked in 24/7 and the bullies who distract themselves by preying on other kids have a 24 h platform for torment. the leads to fake profiles, fake relationships, real suicides.
I agree that is definitely an awful thought.