SPENDING CRYPTOCURRENCIES

BUYING/SELLING GOODS
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AmagiMetals lets you buy precious metals such as gold and silver as well as base metals such as copper, bronze, brass, aluminium, nickel, lead, titanium, tin, iron.  Pay with Bitcoin or traditional currencies.
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Gyft allows you to buy digital gift cards for many retailers and pay for them with Bitcoin. United States only.
Overstock
Overstock.com is an online discount retailer.
Spend BTC on Amazon with Purse.io
MERCHANT SERVICES
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Bitpay provides merchant services for using Bitcoin as a payment method on your website.
DICE/ROULETTE/GAMES OF CHANCE