r4YeqPQqR3bs1295edEE5mv9x2osxf88PS

At some point those vouchers need to be redeemed for fiat.  That either means bags of cash or a traditional bank.  To a bank any kind of voucher means money transmission and banks don't take too kindly to competition to the ACH system.

Fees are not "charged", fees are offered.  If you didn't offer a fee in your transaction it will have the lowest priority for miners.  Some miners even go so far as to ignore any transaction that does not offer a fee.

So this would be a bitcoin "check" or giftcard that anyone could clear.  Great for a one time usage scenario.  I promote bitcoin by handing out bitcoin "checks" with 5BTC on them.  And once redeemed they would be valueless and useless.

In theory you could pass on the "check" without actually redeeming it, but this would be dangerous as you wouldn't know if anyone up stream had copied the private key on the check.  Nor is there a guarantee that the check issuer did not retain a copy of the private key.

This is not the same as a physical bitcoin backed currency.

Ooh,  I just thought of something.  Public key hardened checks.  I write you a check and sign the amount over to your public key.  The bank only clears the check if you can sign a deposit slip with the corresponding private key.  Maybe too much work for a system not generally regarded as broken.

Looking to buy 100MTG 1:1 with PPUSD.  I will use personal payment:money owed method.

Mr. Lucky may be inclined to give away all of his bitcoin because he already wins all lotteries.  Including the fake international lotteries you get in your spam folder.  Not to mention he knows all government secrets, can read everyone's emails, and listen to everyone's skype conversations.