Owned by the tech giant Alphabet (Google), this interest-based social networking platform enables you to stay in touch with people by sharing messages, photos, videos, useful links to sites and so on. It also extends support for video conferencing through Hangouts and allows businesses to promote their brands and products through Google+ business pages.
While many of us have been engrossed in the Instagram lives of our co-workers and peers, a backlash among young people has been quietly boiling. One 2017 survey of British schoolchildren found that 63% would be happy if social media had never been invented. Another survey of 9,000 internet users from the research firm Ampere Analysis found that people aged 18-24 had significantly changed their attitudes towards social media in the past two years. Whereas 66% of this demographic agreed with the statement “social media is important to me” in 2016, only 57% make this claim in 2018. As young people increasingly reject social media, older generations increasingly embrace it: among the 45-plus age bracket, the proportion who value social media has increased from 23% to 28% in the past year, according to Ampere’s data.
Social media is used to fulfill perceived social needs, but not all needs can be fulfilled by social media. For example, lonely individuals are more likely to use the Internet for emotional support than those who are not lonely. Sherry Turkle explores these issues in her book Alone Together as she discusses how people confuse social media usage with authentic communication. She posits that people tend to act differently online and are less afraid to hurt each other's feelings. Additionally, studies on who interacts on the internent have shown that extraversion and openness have a positive relationship with social media, while emotional stability has a negative sloping relationship with social media. 
One challenge is that militant groups have begun to see social media as a major organizing and recruiting tool. The Islamic State of Iraq and the Levant, also known as ISIL, ISIS, and Daesh, has used social media to promote its cause. ISIS produces an online magazine named the Islamic State Report to recruit more fighters. Social media platforms have been weaponized by state-sponsored cyber groups to attack governments in the United States, European Union, and Middle East. Although phishing attacks via email are the most commonly used tactic to breach government networks, phishing attacks on social media rose 500% in 2016.
Usenet, which arrived in 1979, was beat by a precursor of the electronic bulletin board system (BBS) known as Community Memory in 1973. True electronic bulletin board systems arrived with the Computer Bulletin Board System in Chicago, which first came online on 16 February 1978. Before long, most major cities had more than one BBS running on TRS-80, Apple II, Atari, IBM PC, Commodore 64, Sinclair, and similar personal computers. The IBM PC was introduced in 1981, and subsequent models of both Mac computers and PCs were used throughout the 1980s. Multiple modems, followed by specialized telecommunication hardware, allowed many users to be online simultaneously. Compuserve, Prodigy and AOL were three of the largest BBS companies and were the first to migrate to the Internet in the 1990s. Between the mid-1980s and the mid-1990s, BBSes numbered in the tens of thousands in North America alone. Message forums (a specific structure of social media) arose with the BBS phenomenon throughout the 1980s and early 1990s. When the Internet proliferated in the mid-1990s, message forums migrated online, becoming Internet forums, primarily due to cheaper per-person access as well as the ability to handle far more people simultaneously than telco modem banks.