Social media are interactive technologies that facilitate the creation and sharing of information, ideas, interests, and other forms of expression through virtual communities and networks. While challenges to the definition of social media arise due to the variety of stand-alone and built-in social media services currently available, there are some common features:
Social media are interactive Web 2.0 Internet-based applications.
User-generated content—such as text posts or comments, digital photos or videos, and data generated through all online interactions—is the lifeblood of social media.
Users create service-specific profiles for the website or app that are designed and maintained by the social media organization.
Social media helps the development of online social networks by connecting a with those of other individuals or groups.
The term social in regard to media suggests that platforms are user-centric and enable communal activity. As such, social media can be viewed as online facilitators or enhancers of human networks—webs of individuals who enhance social connectivity.
Users usually access social media services through web-based apps on desktops or download services that offer social media functionality to their mobile devices (e.g. smartphones and tablets). As users engage with these electronic services, they create highly interactive platforms in which individuals, communities, and organizations can share, co-create, discuss, participate, and modify user-generated or self-curated content posted online. Additionally, social media are used to document memories, learn about and explore things, advertise oneself, and form friendships along with the growth of ideas from the creation of blogs, podcasts, videos, and gaming sites. This changing relationship between humans and technology is the focus of the emerging field of technological self-studies. Some of the most popular social media websites, with more than 100 million registered users, include Twitter, Facebook (and its associated Messenger), WeChat, ShareChat, Instagram, QZone, Weibo, VK, Tumblr, Baidu Tieba, and LinkedIn.