The thread brings up questions about how kindly we view the credit card behemoths we travelers "profit" from. Has it been ethical for card companies to drive (ok, "implicitly encourage") millions of Americans to go into debt over the last generation and effectively break the financial backs of our middle and lower classes? No, it hasn't been. But, at the same time, we use their cards, pay their fees and travel on their dime, we perpetuate their largely unethical existence. Is that ethical? Hmmmm...