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. " O+ H9 @$ H* s* ]* y4 k+ }; X+ _6 |* T5 W) W8 r5 F# 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.