What is social media and how is it used?

Social media are technologies that people interact with that enable them to share things like photos, documents, information, ideas, politics, and interests with other people.  They are a way for people to make new friends who have similar interests.  Social media is also used in dating and finding love too.  It has even been used to find talent all over the world even from under developed nations where only a camera and internet connection is needed to showcase your talent to the world.  Social media is also used for selling and buying too.