Serve is giving away $10 for answering a trivia question. The catch is that you then need to either have a Serve account or need to sign up for one in order to get the funds. This is available in the U.S. only.
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http://www.playmoneymover.comOnce you have the funds in your account they can be sent to any other Serve user, spent using the Serve prepaid debit card, or withdrawn to a bank account.
How Serve works and why it is relevant to Bitcoiners was described shortly after its April Launch
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http://www.bitcoinmoney.com/post/4165831078This promotioin is similar to Dwolla's giveway program earlier this year where amounts from $1 to $5 were given away. Over a decade ago, PayPal (then x.com) gained a user base by offering the same deal -- $10 for signing up.