看了Ink Cash和Ink Unlimited的terms，没要求新用户，也没要求你过去N个月之内不
曾拥有这张卡。也就是说，你可以关了现在的Ink Cash和Ink Unlimited，然后等几个
月以后再开同样的卡，再拿开卡奖励？这还得了？有没有人尝试过？
一般卡都会说：“This product is available to you if you do not have any
Sapphire card and have not received a new cardmember bonus for any Sapphire
card in the past 48 months.”
但是Ink Cash和Ink Unlimited的terms里面没有写这些。
