translation.en: There are credit card schemes and airline mile programs and coupon cards and all these loyalty schemes that actually do use game dynamics and actually are building the game layer: they just suck.
translation.zh: 这有信用卡刷卡方案、飞行里程计划、 优惠券和其它很多提升客户忠诚度的计划。 它们都利用人们玩游戏的动机 来建立游戏社交圈，但这些游戏动机很糟糕。