Ans : Facebook is one of the online social networking website. It provides you a platform, to building a social relations among people whom you don't know each other til yet. You can share your thoughts or ideas with others who are the people around the world are also within the social network. By that you can get a good relationship gathering information, sharing, communication with others, etc., This kind of websites are called as BUSINESS MODEL, such as " MySpace " and " Facebook " sell * online advertising * on their sites. Their business model is based upon large membership count, and charging for membership would be counterproductive. Social networks operate under an autonomous business model, in which a social network's members serve dual roles as both the suppliers and the consumers of content. This is in contrast to a traditional business model, where the suppliers and consumers are distinct agents. Revenue is typically gained in the autonomous busi