当初申请是为了4卡齐全。discover是最后申请到的。

这张卡的cash back远远没有很多其他的卡好。

Reward Tiers:

• .25% (.0025), if the purchase is part of the first $1,500 in purchases during the anniversary year, or, if the purchases are made at select warehouse clubs or discount stores, and
  
  
• .50% (.0050), if the purchase is part of the second $1,500 in purchases during the anniversary year, and
  
  
• 1.0% (.01), if the purchase is part of the purchases in excess of $3,000 during the anniversary year
  
  
• No known cap on rewards, but perhaps someone who has the card can check their Terms & Conditions to be sure.

好像是这样。因为用的少，很少可以到1%。不过他经常有promotion。好比说餐馆消费5%，或者加油5%，或者某些店5%。有promotion的时候，我就用用。几个月前，因为用得少，discover电话说如果我用他们的卡消费每个月超过100，就给10块cash back，连续3个月。结果我就用它的卡负了三个月的cellphone bill，加上当时的promotion purchase，很容易超过100。有的时候他还有特别的promotion。好比说几个月前在walgreen买东西，给5$。当然只有一次。如果就是用promotion，这张卡的cash back还是挺高的。

据说他还可以弄single-use cc number。不过我没有试过。还有就是去sams club，只能用discover。所以还是挺值得申请的。