何谓随机惊喜呢?比如近期微信支付、支付宝推出的“鼓励金”算不算惊喜呢?用户第一次获得鼓励金时,是惊喜;第二次获得随机鼓励金比第一次多时,也是惊喜;除此之外,都不是惊喜,甚至会带来反效果。比如我上一次抽中0.99,这次只抽中0.22,会让我瞬间产生一丝“下次用支付宝算了”的感觉。制造随机惊喜的关键原则是:首先,出乎用户预期(切忌有规律); What is a random surprise? For example, the recent WeChat payment, Alipay launched “Encouragement gold ” is not surprising? The first time the user received encouragement gold is a surprise; the second random incentive gold than the first time, Is also a surprise; In addition, are not surprises, and even counter-productive. For example, I last pumping 0.99, this time only pumping 0.22, will make me instantly have a trace of “The next time Alipay forget ” feeling. The key principles for making random surprises are: First, out of user expectations (avoid regularity);