Warcraft gold, sure. RMB, I hope not. When you charge your credit card, on the bank's books these are marked as retail credit. The bank expect this portion of

Warcraft gold, sure. RMB, I hope not. When you charge your credit card, on the bank's books these are marked as retail credit. The bank expect this portion of their portfolio to consist of consumer expenses and manages default risks accordingly. Banks also provide credit for currencies / investments, but those are containerized in another portion of the portfolio with different risk management practices. Mixing these two portfolios together will make risk management tricky.