In the most recent Global Financial Stability Report out in Sept. 2011, the increase in the ratio of a country's outstanding credit to GDP is highlighted as a key warning light indicator for country economies. An increase in this ratio of over 5% signals a warning light according to the IMF. It tells us that borrowing is expanding at significantly faster rate than the growth of the economy. Using this indicator would have set a warning light up for the U.S. before the 2008 mortgage crisis, and a warning light well before the financial crises in Greece, Portugal and Ireland. The outstanding credit to GDP ratio went up for China by 24 percentage points in 2009, with 4% percentage point increase in 2010. The ratio was up 30 percentage points in Hong Kong for 2010. The warning light is also up for Turkey and Vietnam. Capital inflows into countries that can be suddenly reversed, and overvalued currencies are a danger for emerging market countries and act as supplemental indicator warning lights. Brazil and South Africa have overvalued currencies. Turkey has high capital inflows. Only a small portion of this is foreign direct investment, the rest helps support a high amount of lending and credit provided by the banks. That a significant portion of this is in short term borrowing poses additional risks, as evident in the 1997 Asian financal crisis for S. Korea, Thailand and Malaysia....