Most social media platforms started with a simple purpose. Facebook started as a way for college students to communicate with one another. Snapchat began as a way to communicate through pictures that would disappear. Twitter started off as a site for users to share brief status updates with others. Instagram was for users to share pictures in an online photo album for friends to view. Over the years each of these social media sites have evolved. Today, the evolution of social media continues and businesses struggle to keep up.
Facebook 2006
http://www.firstversions.com/2015/04/facebook.html
Facebook 2017
https://www.merkleinc.com/blog/fmc-facebook-ad-changes-and-timeline-business-pages