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,,亚马逊就允许用户通过原先留过的电子邮箱地址注册新账号,,,,,This is a common tactic for financial sites. For example, first direct will credit your account with £100 for every friend you refer.,Naked Wines uses a similar tactic, offering a £40 voucher for friends, and crediting customers’ accounts for their efforts.,,,原文：//www.datatmt.com/archives/33010.html,