In our life, what also has two sides of it is: the good and the bad. Facebook social network too. One of the other utilities can not deny is the sharing of facebook: information, images, news,… with speed in seconds. Social networks are easy to use and it offers many benefits to users. It will create conditions conducive to the learning kidney as well as the communication hub in the work of the user. Especially young people, it will bring you a lot of opportunities to develop the ability to search for business learning, earn money to be able to achieve the dream. However, Facebook will affect very bad for those who use it on purpose or not, or the unhealthy purpose. It also can be addictive for those who do not know control myself, when they won too much time using this application. Therefore, beneficial or harmful facebook depending on intended use of each person.

Facebook is a free social networking site operated by Facebook, Inc. and privately owned. Users can join networks organized by city, workplace, school and region to link and communicate with others. People can also make friends and send messages to them, and update their profile page to let friends know about them. The website's name refers to scrapbooks used to name campus community members that some US colleges and universities give new students to schools, departments, and staff to be able to Get to know each other on campus.

With that number, Facebook is the most popular social network, followed by MySpace and Twitter.

Facebook has encountered some controversy over the years. It has been banned for some time in some countries, including Syria, China, Vietnam and Iran. It has also been banned in many offices to restrict employees from spending time using the service. Privacy on Facebook is also a controversial issue. The site is also facing a number of lawsuits from some of Zuckerberg's classmates, who claim that Facebook stole their source code and other intellectual assets.

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