Investors are dumping the currency because the Canadian economy is widely perceived as commodity-based and export-oriented at a time when commodity prices are depressed and export markets are sluggish.

ECONOMIST: The Canadian dollar

The currency markets might greet an Italian rate cut by dumping lire, which would wreck Italy's hopes of joining the single currency in 1999.

ECONOMIST: European interest rates

Currency manipulation, subsidization of industry, dumping, intellectual property theft, discrimination against imports, forced technology transfer, indigenous innovation policies, raw material export restrictions, and other allegations of cheating came to define Chinese trade practices.

FORBES: Soured U.S.-China Relationship Approaches Inflection Point

Before the G-20 meeting, China's central bank chief, Zhou Xiaochuan, floated the idea of dumping the U.S. dollar as the world's reserve currency, replacing it with a super-sovereign international reserve currency.

CNN: U.S.-China relations in focus at 'G-2' summit