howto design an invite feature feature?

Posted by fenec on Stack Overflow See other posts from Stack Overflow or by fenec
Published on 2010-05-21T00:15:19Z Indexed on 2010/05/21 0:20 UTC
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design

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rails

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facebook

hello i am trying to implement a feature in my facebook application that would give 100 point to someone who would send 10 invitations. however i want a limit that feature for each user to use it only 10 times a day. how should i design my feature to do what i want

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