The resale market is turning out to be one of the hottest trends of the young new year, and is gaining momentum as brick-and-mortar retailers roll out high-end resale platforms. Gap has now joined forces with thredUP, which has taken the lead as a third-party “circular economy” company. And personalized messaging can be a deal-breaker or deal-maker for shoppers, per a new report, but privacy is paramount. All this, Today in Data.