A group is defined as small set of people who interact with each other, usually face to face, over time in order to reach goals. There are four types of groups which are learning groups, growth groups, problem-solving groups, and social groups. A clear example of social group is facebook. Facebook was founded by Mark Zuckerberg and his fellow roommates Dustin Moskovitz and Chris Hughes while he was a student at Harvard University. Website membership was initially limited to Harvard students, but was expanded to other colleges in the Boston area, the Ivy League, and Stanford University. It later expanded further to include any university student, then high school students, and, finally, to anyone aged 13 and over. The website currently has more than 175 million active users worldwide. Facebook recently surpassed MySpace in amount of visitors, making Facebook the number 1 social network, followed by MySpace and Friendster. Facebook users may choose to join one or more networks, organized by city, workplace, school, and region. These networks help users connect with members of the same network. Users can also connect with friends, giving them access to their friends' profiles. The website is free to users, but generates revenue from advertising. Users can create profiles including photos and lists of personal interests, exchange private or public messages, and join groups of friends. Facebook is now the best social group webpage.

- chirag mehta-