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. ; b. [8 M* R4 B9 ~4 b9 p* ^8 V; S, c3 H. P9 t# \
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.