Definition of Social Media
Social Media consists of media that support and encourage social interaction among users. For instance, online discussion forums are designed to allow people to post messages and for other users to respond in kind.
While there may be social aspects to any medium (e.g. links to share an article by email), social media typically refers to those media whose major functions are oriented toward sharing of information, and consequently most of the information on such media are generated by users.
Most social media are at least substantially web-based, although not exclusively, since they may be integrated with applications for computers, phones, and other devices.
Common examples of social media sites are Twitter and Facebook.
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