If you see a gift card or driving credit on eBay or craigslist (cl is also partly owner by ebay 49%) steer cller.  There have been a rash of vouchers from zipcar that have been bought with stolen credit cards.  These are offered cheap on craigslist and unsuspecting sellers sell them thinking they are good however once the buyer goes to redeem it, the voucher is invalid.  Just a heads up!