The way to play the cash giftcard game is to take advantage of the cashback of the paying card. For example, Discover had a promotion on CyberMonday that paid

The way to play the cash giftcard game is to take advantage of the cashback of the paying card. For example, Discover had a promotion on CyberMonday that paid $100 if I spent at least $1000 on that day. I didn't have anything pending to buy on that particular day, so I bought an $1000 Amex giftcard paid with the Discover card, pocketing the $100 cashback and had the $1000 giftcard to use in daily usage.