Quick thought for WGT.
This situation is entirely of your own creation. You were warned by numerous members that removing the gift cards would drive credit sales underground but chose to ignore that because "the marketing department know best".
Now you're in a situation where trying to prevent such sales is unrealistic and unenforceable and by disabling buggyy's account you've made sure that no-one will give you any public hint of who is buying and selling what.
Poorly though-through economic decision that creates a situation you can't control. Very disappointing as well that there has been no attempt to address customer dissatisfaction with the change and engage with the community beyond the efforts of Pizza and Icon. All this despite the fact a significant number of senior members spoke up.
I sure as hell wouldn't employ any of your marketing and business strategy team in my company.