I have purchased a number of DD cards from RAISE.COM (a legit site) for Dunkin and of the 4 I have purchased over the last 4 months 3 have been shut down within 1 day to 2 weeks. RAISE replaces or refunds them within 60 days without question but be warned when buying these (just like for Starbucks).  Obviously DD is becoming the new SBX and these cards are likely obtained from stolen CC's just as the ones from RAISE.COM were according to Dunkin CS.