A German-born Auckland woman was called a Nazi and asked if she liked to stamp people "just like at Auschwitz" after she denied four men entry to a concert.

Do it early - that's the advice an internet safety expert has for parents worried about how and when they should address concerns about their children's online activity.

Thousands of teenagers are being exposed to graphic sexual material, violence, drug abuse and high levels of profanity on school-themed Facebook pages run by students.

When people post deliberately extreme comments from the anonymity of cyberspace, the effects can be devastating - and sometimes fatal.

A cell phone ban has helped reduce bullying and cut the number of student fights at a Wanganui high school.

Verbal and physical aggression is unacceptable at home and work, yet it's commonplace on the sidelines.