Hence, the level of network sociability should determine by the actual performances of its users.
A social networking service (also social networking site, SNS or social media) is an online platform that is used by people to build social networks or social relations with other people who share similar personal or career interests, activities, backgrounds or real-life connections.
The variety of stand-alone and built-in social networking services currently available in the online space introduces challenges of definition; however, there are some common features: Most social network services are web-based and provide means for users to interact over the Internet, such as by e-mail and instant messaging and online forums.
Social networking sites allow users to share ideas, digital photos and videos, posts, and inform others about online or real world activities and events with people in their network.
While in-person social networking, such as gathering in a village market to talk about events has existed since the earliest developments of towns, the Web enables people to connect with others who live in different locations, ranging from across a city to across the world.
Depending on the social media platform, members may be able to contact any other member.
In other cases, members can contact anyone they have a connection to, and subsequently anyone that contact has a connection to, and so on.
Orkut became the first popular social networking service in Brazil (although most of its very first users were from the United States) and quickly grew in popularity in India (Madhavan, 2007).
Through e-mail and instant messaging, online communities are created where a gift economy and reciprocal altruism are encouraged through cooperation.
For the social science theoretical concept of relationships between people, see Social network.
For a list of services, see List of social networking websites.
ARPANET, LISTSERV, and bulletin board services (BBS).