This story has been around for some time now and some years ago one fellow made himself a millionaire without risk.
But the loophole has not been closed and it is still enjoyable and worth the read. Maybe you can look out for similar opportunities.
Travel enthusiasts who buy thousands of dollar coins with credit cards that award frequent-flier miles for purchases.
Once in possession of the coins — shipped to them by the government for free — they can deposit them into their bank accounts and pay off the credit card bills. The result: a free ticket to anywhere.



