Cyberbullying

The term "cyberbullying" was first coined and defined by Bill Belsey, as "the use of information and communication technologies to support deliberate, repeated, and hostile behavior by an individual or group, that is intended to harm others."Because of the anonymous properties,the users always don't make clear themselves,relying on nicknames.As a result,the users make use of this feature,can use verbal violence to other users,make the victims' personal information(such as real name) known to the public and so on.

The National Crime Prevention Council reports that cyber-bullying is a problem that affects almost half of all American teens. In September 2006, ABC News reported on a survey prepared by I-Safe.Org. This 2004 survey of 1,500 students between grades 4–8 reported:  42% of kids have been bullied while online. One in four have had it happen more than once. 35% of kids have been threatened online. Nearly one in five had had it happen more than once. 21% of kids have received mean or threatening e-mails or other messages. 58% of kids admit someone has said mean or hurtful things to them online. More than four out of ten say it has happened more than once. 58% have not told their parents or an adult about something mean or hurtful that happened to them online..

http://www.stopbullying.gov/topics/cyberbullying/
http://www.cyberbullying.us/