I found this great infographic from Unifiedsocial.com that showcases the history of Social advertising. It’s a great timeline of when social sites were founded and when their platform began to allow advertising. As you will see … a lot has changed within the last few years on the social media landscape!
![social-media-history-infographic](https://ejennsolutions.com/wp-content/uploads/2014/03/social-media-history-infographic.jpg)