Nowadays social networks have become the most popular sites, especially in recent times they have spread enormously. People who want to stay connected with their friends, family or classmates usually use these social networks such as (Facebook, Twitter, MySpace, tumblr and Instagram). This essay will specialize on the topic of Facebook because it is the most popular among them. Facebook was founded in 2004. Facebook is the ability to share information and gain knowledge, it is also used for advertising and marketing. Facebook gives people the ability to share their feelings, videos, blogs, interests and pictures. Facebook has become the best way to find your old friends and other people you can't find. Since 2004 this site has gained over 175 million active users and is still growing. The Facebook controversy leads to strong debates among people because there are both positive and negative opinions about the site. Many people believe that Facebook is harmful for users, on the other hand people believe that Facebook is useful for maintaining socialization and staying connected with people. Facebook has numerous benefits such as socialization, marketing, and advertising. Facebook has become the most popular way to communicate with people, because it has become easier and cheaper. Facebook decreases face-to-face interaction because people are always holding their cell phones, so now there is time to interact with people. While there are people who would like to connect with their friends or family through social networks rather than spending time socializing in person, on the other hand there are those who believe that Facebook improves communication and helps expand network of relationships of the individual social wit…… half paper…… through Facebook. Some people believe that Facebook advertising is not suitable because people use Facebook to chat and keep in touch with their friends, so it is difficult to attract people to this advertising. While other people believe that advertising through Facebook is a good way as it is easy to use, you can use images, you can clearly see your potential reach and you can think locally. Finally, social networks have become the most popular websites, especially Facebook. Although there are many people against it, while others support the use of Facebook, no one can deny the benefits of Facebook in different aspects such as socializing, marketing and advertising, and it allows people with poor social skills to express themselves without being shy about social comparisons. interaction, so Facebook these days is one of the best ways of communication.