By Antonia McLaughlin -- The Japanese housewife is an iconic and integral part of the Japanese populace. She holds much domestic power, often autonomously, while her husband is working all hours of the day and night. She also holds the purse strings of her husband’s salary which, according to some analysts, is an estimated ¥12.5 trillion in household savings. The Japanese housewife has recently taken on a whole new level of meaning, and is redefining the very concept of domestic housework in the form of online currency trading.