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. ; \! q( Q. H7 u' x, w: N & u+ I* W3 ^; a/ c& u* w4 Mbut 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.