The relentless rise of electricity prices over the past decade has made many consumers more conscientious about how they use electric power. Many of those conscientious people may find it frustrating — to put it mildly — that their daily or even hourly efforts to turn off devices they're not using hasn't delivered the results they'd expected.

The blame belongs to the growing number of "vampire" or "phantom" electronic products that populate today's typical home. An alarmingly large numbe...
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