It's simple, we are smart. Our redemption rate is the highest in the industry because the 30 day expiration date provides a sense of urgency to redeem it. But the real reason and the most important reason is that the 30 day expiration date is there to protect our business and your business in the event our contracts change with the participating properties and travel companies, we can easily update our offers and we don't need to worry about having a ton of unexpired discontinued certificates in circulation that may be redeemed at anytime in the future. Now that would be scary to even think about, right? Could you imagine facing a lawsuit because a customer allowed two years to transpire on an offer you presented and is now discontinued and no longer offered?