We define social media as online or digital technologies that serve to connect people, information and organisations through networks. The term evolved as a way to -distinguish the emerging online -information platforms from traditional "broadcast media" -- TV, radio, film, newspapers -- by highlighting that these new tools -were "socialised" and allowed the audiences to contribute to their content. Social media have therefore become defined in relation to these existing media channels, but in fact they have their ancestry in existing social technologies, like the telephone and the letter. If traditional media connect people to information, social media connect people to people
