For those not familiar with retargeting, it may take a moment for the concept to take hold. For nearly all of media history, mediums that attracted a certain demographic of readers, viewers or listeners could sell advertising to those who targeted that same demographic. The internet added a new twist by giving people new ways to segment demographics. Google leveraged users’ search terms (key words) as a way to identify a target demographic while Facebook collected seemingly everything about each user: age, gender, address, like-clicks, relationship status, etc.
