I think SNS[social network service] is not having = does not have enough positive influences to people who uses them. Although it is made as to make people's human relationship more actively. Many people are too absorbed just = in using it as = just to show off and bluffing. And even there are some people depressed by thoes bluffing = Some people become deppressed because of cyber bullying. If we cannot use it wisely, it will be better not to use it.