Google Express Gift Code: how to prevent abuse
Google Express wants to promote itself by allowing member to give $25 to a new user, and get $5 for yourself.
-- So user's friend can start to use express.
But this can be easily abused. - the user can send the gift card to his/her address, and just register another account to use both $25 and $5.
How it should work?
User has to use a different address - express will send express $25 gift card to his/her friend, express will mail this user the $5 gift card. The $5 gift card should be only effective after his/her friend register an express card and add this promotion card(not really use it).
-- Express can reward this user more than $5 - to encourage user to send express invitations to more users.
Same address can be used once.
+Google Express
Google Express wants to promote itself by allowing member to give $25 to a new user, and get $5 for yourself.
-- So user's friend can start to use express.
But this can be easily abused. - the user can send the gift card to his/her address, and just register another account to use both $25 and $5.
How it should work?
User has to use a different address - express will send express $25 gift card to his/her friend, express will mail this user the $5 gift card. The $5 gift card should be only effective after his/her friend register an express card and add this promotion card(not really use it).
-- Express can reward this user more than $5 - to encourage user to send express invitations to more users.
Same address can be used once.
+Google Express
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