Annoyed I didn't check FT first before using Cardpool. Figured I'd just add my negative experience to this existing thread. I tried out Cardpool with just one GC, fortunately a low denomination one. Cardpool marked the transaction as complete, but after a few weeks I still hadn't received payment. When I logged on the Cardpool website to check, the transaction instead had changed to canceled. I checked the GC balance and it had been emptied. Cardpool won't return e-mails.