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. ( Y9 f K+ v5 y% O% j 7 l, Y' y+ U% [: W% ? _8 }, Abut 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.