Proponents of social networking sites say that the online communities promote increased interaction with friends and family; offer teachers, librarians, and students valuable access to educational support and materials; facilitate social and political change; and disseminate useful information rapidly.
Opponents of social networking say that the sites prevent face-to-face communication; waste time on frivolous activity; alter children’s brains and behavior making them more prone to ADHD; expose users to predators like pedophiles and burglars; and spread false and potentially dangerous information.
SixDegrees.com, which existed from 1997-2001, is considered the first social networking site because it allowed users to create personal spaces and connect to friends online. Friendster, created in 2002, popularized social networking in the United States but was quickly outpaced by other social networking sites like: MySpace (2003), Facebook (2004), Twitter (2006), Pinterest (2009), and Google+ (2012). Facebook reported one billion monthly users worldwide on October 4, 2012, making it the most popular social networking site with one in seven people on the planet using the site. [142] Every day, Facebook manages 2.7 billion "Likes,” 300 million photo uploads, and 2.5 billion status updates and check-ins. [143] Twitter, the second largest social networking site, had an estimated 107.7 million users in the United States (as of Jan. 31, 2012) [144] and 500 million worldwide users (as of Sep. 28, 2012). [172] Pinterest is the third largest social network with 23 million unique visitors in July 2012, followed by LinkedIn, Tagged, Google+, and