Well if this isn't Global Fiat Currency Differentiation, then I don't know what is. 

http://www.theglobeandmail.com/repor...rticle1947341/
Canada and its allies in the Group of Seven nations are taking a stand against the currency traders who pushed the yen to a record high this week, a destabilizing surge that risked hampering Japan’s efforts to recover from last week’s devastating earthquake and tsunami.
Acting on orders from their governments, central banks in Japan, Europe, the United States and Canada banded together Friday to attempt to alter the course of currency trading for the first time in a decade.
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Canada and its allies in the Group of Seven nations are taking a stand against the currency traders who pushed the yen to a record high this week, a destabilizing surge that risked hampering Japan’s efforts to recover from last week’s devastating earthquake and tsunami.
Acting on orders from their governments, central banks in Japan, Europe, the United States and Canada banded together Friday to attempt to alter the course of currency trading for the first time in a decade.
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