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. 1 V, d8 d* q% R( y; _2 c# P% e 0 M j# I+ F1 f" \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.