If you have never heard of “Retargeting” then you can read more about it on a Wikipedia Article. They do a better job explaining it than I ever could. Then once you know what it is, head on over to Retargeter. The guys at Retargeter are the pioneers in retargeting and their results speak for themselves. I have tested both AdRoll and Google’s retargeting platforms and the ROI was nowhere near as good as Retargeter. Plus their support is incredible.