A social networking service (also social networking site, SNS or social media) is an online platform that people use 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 online introduces challenges of definition; however, some common features exist: (such as former school-year or classmates), means to connect with friends (usually with self-description pages), and a recommendation system linked to trust.Companies are using social media as a way to learn about potential employees' personalities and behavior.

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Social networks are providing a different way for individuals to communicate digitally.

These communities of hypertexts allow for the sharing of information and ideas, an old concept placed in a digital environment.

Friendster became very popular in the Pacific Islands.

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).

Facebook and other social networking tools are increasingly the aim of scholarly research.

Scholars in many fields have begun to investigate the impact of social networking sites, investigating how such sites may play into issues of identity, privacy, According to a study in 2015, 63% of the users of Facebook or Twitter in the USA consider these networks to be their main source of news, with entertainment news being the most seen.New social networking methods were developed by the end of the 1990s, and many sites began to develop more advanced features for users to find and manage friends. However, thanks to the nation's high Internet penetration rate, the first mass social networking site was the South Korean service, Cyworld, launched as a blog-based site in 1999 and social networking features added in 2001.Friendster was followed by My Space and Linked In a year later, and eventually Bebo.Furthermore, the idea that these services are defined by their ability to bring people together provides too broad a definition.Such a broad definition would suggest that the telegraph and telephone were social networking services – not the Internet technologies scholars are intending to describe.have noted that the term "social" cannot account for technological features of the social network platforms alone.