The century of digital revolution has brought us some wonderful inventions of technology such as social network site. Similarly, one of the greatest inventions- Facebook- has strongly effected our life. The main advantage of Facebook is that it helps the users easily contact with each other all over the world. Not only by chatting, people also can talk and see their friend’s face by using webcam. Another greatest things that we are beneficial from Facebook is a variety of useful information. By selecting some page created by famous people, we can get the lastest helpful news from them. For example, if we “like” some online bookstore’s page such as Fahasa or Vinabook, we can know when they have books on sale so that we can spend less money to buy a good new book,… On the other hand, there are some disadvantage of using Facebook nowadays. First of all, some adults now just siting down all day and staring at the computer’s screen. They busy chatting with their friends and avoid taking part in outdoor activities. In addition, some students also are addicted to playing games and ignoring doing their homework and It seems very dangerous if they continue to do it usually. Futhemore, Facebook or other means of social website always be the place where most hackers and robbers take place and using it for bad purposes. So, everybody has to be alert when using it In conclusion, although Facebook has a lot of disadvantages, we can not deny its own advantages. How it affects you depends on how you use it .So, everybody have to be wise to use it. p/s : this essay requires 150 words but i can't shorten it anymore, please help me to correct my mistakes and shorten this essay ^^ many thanks to all of you