theoretically it may affect your credit scores; however, in my experience, it does not make a big difference. I've canceled a couple of credit cards, when I apply a mortgage, I still got a good rate.
not bad.# T$ C- s! Z* M0 X2 K
7 d w+ S: b; ~0 H
but compared with other rewards cards, the rate of getting points is not good enough. But if you buy things a lot at their stores, it is very good.