Nowadays, social networking sites are very popular among people all around the world especially teenagers. In fact, social networking sites such as Facebook, MySpace and Twitter are names which are quite familiar to anyone of us. Furthermore, many of us make use of these social networking sites to stay in touch with our family and friends. This is because that these sites are cheap, fast and easy to access. However, the parents often feel worry for letting their teens use these social networking sites. In this case, a study I’ve founded stated that these sites have actually bring more benefits than harms to teens.