what type of rock is used for radiometric dating - Social networking communities and e dating services
For defunct social networking websites, see List of defunct social networking websites.
This list is not exhaustive, and is limited to notable, well-known sites.
social-network services, though in a broader sense, a social-network service usually provides an individual-centered service whereas online community services are group-centered.
Defined as "websites that facilitate the building of a network of contacts in order to exchange various types of content online," social networking sites provide a space for interaction to continue beyond in person interactions.
These computer mediated interactions link members of various networks and may help to both maintain and develop new social ties.
Social networking sites allow users to share ideas, digital photos and videos, posts, and to inform others about online or real-world activities and events with people in their network.
Information is suited to a gift economy, as information is a nonrival good and can be gifted at practically no cost.
Hence, the level of network sociability should determine by the actual performances of its users.
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.
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