US Dollar's Days are Numbered to make way for Global Monetary System
While it's easy to think China's currency is being poised to bring down the U.S. Dollar, don't lose sight of the fact that it's the same international banking cartel that is engineering China's currency (Its' called the Hegelian Dialectic strategy). See here: http://www.alt-market.com/articles/2168-the-new-world-order-and-the-rise-of-the-east
It seems their modus operandi is to take down the American Empire that's saddled with debt by raising another (China) based on a debt-based currency system which will appear to be the next reserve currency (the same system used to take down previous empires for the past 300 years). But it's more likely, in my opinion, that a global currency will emerge with the Chinese currency only being used as a gambit to take down the dollar.