Halloween isn't until tomorrow, but Best Buy has declared today Vampire Day. Not the vampires you ward off with garlic and by driving a stake through their heart, of course—but vampire power, which is the energy consumed by plugged-in appliances while they're not in use.
According to Best Buy, "This insidious phenomenon is responsible for wasting an estimated $4 billion in the U.S. annually, and the Department of Energy notes that this figure could rise by 20 percent by 2010. Forty percent of all electricity used to power electronics and appliances in the average American home is consumed while they are turned off and the government has estimated that 'vampire power' consumes enough energy to equal to the output of 17 power plants."
So how do you kill vampire power before it costs you any more money?