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. 3 s' }% u! m0 F! G3 \' {6 E) v% o B. _/ j& H* {0 U4 j4 i5 Nbut 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.