You can take some simple steps to reduce the financial and environmental impact from these "vampire" appliances. Unplugging devices is the simplest way to solve the problem, but can be a hassle. Plugging a couple of your devices into a surge protector that can be clicked on and off can make things easier.
When you're shopping for a new device, check out this online database of products rated by their standby energy use from the Federal Energy Management Program at the U.S. Department of Energy. And devices that have the Energy Star label from the Environmental Protection Agency will use less energy when they're in or out of use. See also: ::How To Green Your Electricity