商经常会发生转移成本 Switching Cost ; SC
经常转发
Frequent forwarding
以上为机器翻译结果，长、整句建议使用 人工翻译 。
调查显示，很多时候收件人并不属于预计消费人群，而且人们转发邮件时还经常更改广告的信息。
And frequently research showed not always to the targeted group of would-be consumers and often they would be passing on adverts having changed their message.
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应用推荐
模块上移
模块下移
不移动