Reddit 上有 data point 爆出，最近不少账户运通 MR 积分有大幅减少的现象。有人账号少了 90k 积分，并且收到了运通如下的邮件。
“We are writing to let you know that, after careful review of your Membership Rewards® account activity, we have removed points in your Membership Rewards® program account. Please ensure that any Additional Card Members who are authorized to redeem points from your account are notified of this change in your Membership Rewards balance.
Why we are removing these points We recently noticed point accrual or redemption activity on your Membership Rewards program account that indicates an effort to obtain or use points in a manner that is not appropriate. It’s important for you to know that the Membership Rewards program terms and conditions state that “If we in our sole discretion determine that you have engaged in abuse, misuse or gaming in connection with earning or using points or that you may attempt to do so, we may:
Take away any points in your program account, Temporarily suspend your ability to redeem points, Temporarily suspend your ability to earn points, Cancel your program account, or Cancel any of your American Express Cards”
邮件没有明说，但大家普遍怀疑是跟 self referral 有关。如果已经自己 refer 申卡获得大量积分，可以考虑尽快 redeem 了，不少被收回的积分就发生在这两天。至少近期不要 refer 自己申卡比较安全。