It looks like BlackHawk Network is the company behind the gift cards stands that have flourished in grocery stores Which I believe is the same company that act

It looks like BlackHawk Network is the company behind the gift cards stands that have flourished in grocery stores Which I believe is the same company that actually runs and controls the operations for these cards too (I don't have time to check + confirm). But if that's the case, then I'd be cautious as to whether they've acquired Cardpool to shut it down or at least change it's direction. Blackhawk's customer is the retailer the gift card is for, and they may have views on whether they like people exchanging cards on the secondary market. If they already control the underlying technology + fulfillment, then they probably could have created CardPool functionality already if they really wanted themselves.