Mary Ellen Handy had a painful crash course in the dangers of the Internet.The trouble started in her freshman year of high school after a dispute over a boy's affections.

Internet Safety Tips Camera phones, digital cameras and web cams are everywhere these days, and kids can be victims of their own inexperience with new technology.

Many post pictures, videos or notes online that they later regret.

With the speed and ease of the Internet, her classmate soon recruited 20 others to bully Handy online. As the ordeal dragged on for months, she dreaded going to school, felt physically ill and saw her grades tumble.

No doubt, the Internet can be an extremely useful tool for young people.

Some cyberbullies pose as their victims and send out harassing messages to others.

Recently, cyberbullies have also begun posting humiliating videos of other kids they dislike, says Parry Aftab, a cyberspace security and privacy lawyer who also serves as executive director of Wired Safety.org, one of the largest Internet safety education groups in the world.Follow these tips to protect your kids from the 4 major dangers of the Internet.Internet Danger #1: Cyberbullying On the Internet, cyberbullying takes various forms, says Netsmartz411.org, an online resource that educates parents about Internet safety.But instant messaging, chat rooms, emails and social networking sites can also bring trouble - from cyberbullying to more serious Internet dangers, including exposure to sexual predators.How savvy are you about keeping your child or teenager safe online?The Cyber Tipline helps prevent sexual exploitation of children by reporting cases of kids enticed online to do sexual acts.