“I just arrived back from lecturing at the week-long Free State Project’s Tenth Annual Porcupine Freedom Festival, a huge gathering of libertarians of all stripes from all over the U.S. in the beautiful White Mountains of New Hampshire. Many of the vendors accepted an array of payments media. I was particularly struck by the sign on one stall which read: ‘Bitcoin, silver coins, Shire Silver, ammo and even Federal Reserve notes accepted.’ I was also delighted to discover that privately minted gold and silver money were circulating at the festival in the form of the aforementioned Shire Silver. These were widely accepted as media of exchange by vendors and paid out in change.”
http://bastiat.mises.org/2013/06/who-says-the-market-cannot-supply-its-own-money/