Yes. We use a cashback rewards card and charge almost everything (anything we can) on it. Then we pay it off in full each month. This way, we never pay a dime in interest and we make thousands of dollars on the cashback money.
YIKES....using a credit card to build credit?!??! Not a good idea.... at all. and then earning 5% cash back when you are paying 12% in interest.... even worse idea, lol.
As I said earlier....I've made it 11 years without a credit card. I haven't had one lick of credit since 2001.... and I am debt free... so I guess a credit rating just isn't a big deal. Just be careful..... that's all I am saying :-)