ianoo (United Kingdom)
Top Up a Friend
Just a simple idea for mobile phones. You and your friends are out, you run out of credit on your mobile phone. You friend says that's okay you give me the cash and I can send you some of my credit from my phone. Your friend calls a special number with passkey etc, types in the phone number he wants to credit, and it's all done. I call it "cross crediting of phones". and that's it

Reward: a nice phone and an 18month subscription free.

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