What problems can cyberbullying cause?

People that are easily targeted by bullies can't seem to ignore the insults even though they come from a source that offers no accountablity and often comes from total strangers. I was amazed when I first started answering questions on this site how many people gave very hurtful and insulting answers to people they didn't even know. In short I guess people that don't have much confidence in themselves tend to believe all that trash that other folks throw at them. It's sad too because most of the people being bullied will figure out eventually how to overcome it and become successful citizens later on.