Besides, social networks also have some disadvantages for users and (thêm) the people around us. We will spend a lot of time (bỏ for) using social networks, from that all our activities will be affected. Firstly, (bỏ every) time for (bỏ for thừa) every activity will decrease (thay bằng) because of daily meals, activities with family, studying (to -> and) and social activities … so the relationship will be no more. Secondly, the body always feels (thêm s) tired, eyesight will be reduced. Psychological users are guilty, lack of positive, loneliness in life because we lack (bỏ of) sharing, caring, talking directly with people. Thirdly, today the social network is very wide, many social components are used and very difficult to manage so the risk of exposure to inaccurate, unhealthy information and cheat about affection, money, material.