It's generally understood that it's quite effective to advertise to prior customers compared to say, targeting a geographic area. Apparently it's about as effe

It's generally understood that it's quite effective to advertise to prior customers compared to say, targeting a geographic area. Apparently it's about as effective as search ads: http://venturebeat.com/2014/12/16/90-of-marketers-say-retargeting-now-as-good-as-search-ads-email-marketing/ http://venturebeat.com/2014/12/16/90-of-marketers-say-retarg...