A social networking service is an online service, platform, or site that focuses on facilitating the building of social networks or social relations among people who, for example, share interests, activities, backgrounds, or real-life connections. A social network service consists of a representation of each user (often a profile), his/her social links, and a variety of additional services. Most social network services are web-based and provide means for users to interact over the Internet, such as e-mail and instant messaging. Online community services are sometimes considered as a social network service, though in a broader sense, social network service usually means an individual-centered service whereas online community services are group-centered. Social networking sites allow users to share ideas, activities, events, and interests within their individual networks.
The main types of social networking services are those that contain category places (such as former school year or classmates), means to connect with friends (usually with self-description pages), and a recommendation system linked to trust. Popular methods now combine many of these, with American-based services Facebook, Google+, and Twitter widely used worldwide; Nexopia in Canada; Badoo, Bebo, VKontakte, Draugiem.lv (mostly in Latvia), Hi5, Hyves (mostly in The Netherlands), iWiW (mostly in Hungary), Nasza-Klasa (mostly in Poland), Skyrock, The Sphere, StudiVZ (mostly in Germany), Tagged, Tuenti (mostly in Spain), and XING in parts of Europe; Hi5 and Orkut in South America and Central America; LAGbook in Africa; and Cyworld, Mixi, Orkut, renren,weibo and Wretch in Asia and the Pacific Islands.
There have been attempts to standardize these services to avoid the need to duplicate entries of friends and interests (see the FOAF standard and the Open Source Initiative). A 2011 survey found that 47% of American adults use a social networking service.
Read more about Social Networking Service: History, Social Impact, Emerging Trends, Investigations, Open Source Software, Market Share, World Usage, In The Media
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