Halloween! Ghosts, goblins, witches, and vampires will soon be loose in the land and, while three of them will cost a homeowner repeated trips to the door and maybe $10 in miniature Snickers bars, vampires can cost real money. A vampire is an appliance that continues to draw power even when it is turned off. The truth is, it is not off but in "stand-by" mode , an automatic default for many appliances and one that can significantly impact the amount of electricity used in the home. This...