Facebook

Facebook is a social network that people around the world used it everyday. There are about 600 million active user in this social network. They can use facebook account to connect with their family, their friend around the world. It is a social network that people can post their status on their wall, on their friends' wall. moreover, user can upload their picture, video as much as they can. Especially share information on facebook is more faster than simple email, because what i write on my wall, all my friends, friend of friend can see or everyone can see it. In addition, facebook also let their user set their personal account. For example, they can block picture or information to hide from everyone, only their friend can see it. This is a good system for user to make choice to openly their account information or hide.