Facebook is the most popular social networking Website in the world with 500 million active users which was founded in 2004 by Mark Zuckerberg, who was a student of Harvard University. The site allows users to create personal profiles with information such as their hometowns, work, educational background, favorite things, and religious affiliation. It encourages them to extend their network by adding other users as friends, and many people try to see how many “friends” they can accumulate. To interact with Facebook friends, users can send messages; “poke” each others; upload and view albums, photos, games, and videos; and “tag” or label people in their photos. They can post comments on friends “walls” and create status updates viewable to everyone. Facebook is fulfilling its mission to “give people the power to share and make the world more open and connected.”
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