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. 9 n" f9 A+ \( \ $ b4 w8 H1 T) p/ U' Qbut 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.