Each month my friendly electric company tries to give tips on saving power. On and earlier post on saving on heating and power I posted on using a power strip for computers etc.
This month one of their tips was on "Phantom" usage:
Many appliances use power even when they're off. Save by plugging TVs, VCRs, fax machines, computers, printers, etc. into a power strip and turn it off except when needed.
They had several other tips or explanations on why your bill might be higher, which made sense, longer billing cycle, colder weather, full house, Xmas lights, and so on.
But for what it is worth, the power strip could save. Next step is getting the many computers turned off in my house. LOL