I signed up for an airline credit card which requires me to spend a
certain amount in a few
months in order to get their bonus miles. I was thinking to buy up
some gift cards, but
wondered if any gift cards offer an incentive for purchasing them. In
other words if I buy
a $500 Walmart gift card, do I automatically get an extra $25 credit
added to the card? Or
are there any gas stations gift cards?