littlebigman -- I just noticed that the article you linked actually refers to a Kill-a-Watt as a Voltmeter, which is a total misnomer. It is a power meter. Voltmeter usually refers to a multimeter -- http://en.wikipedia.org/wiki/Multimeter
-- which is not useful for power measurements.
Another oddity is that they recommend using an inkjet by turning off the power to it on a regular basis. Many inkjets will leave the cartridge open and the ink will evaporate if you turn the power off. Way back in the day my dad printed about 10 pages a year with an inkjet and he had to buy a new ink cartridge every 3 to 6 months because he was turning the printer off by way of a power strip instead of waiting for the extremely long process of shutting the inkjet down by pressing the power button and waiting for it to seal up the cartridge (it was a long and noisy procedure).
And that isn't going into the issues with color inkjet alignment/prime routines that waste large amounts of ink. Or smart cartridges that say they are out when there is still ink left (based on date of manufacture or power on hours instead of just monitoring the actual ink level).
It's widely known that printer ink is way overpriced:http://www.cockeyed.com/science/gallon/liquid.htmlhttp://arstechnica.com/hardware/news/20 ... prices.arshttp://www.theregister.co.uk/2003/07/04 ... imes_more/
and on and on...
It's poor economics to save a few dollars a year on electricity to end up having to pay several times more dollars for ink.
My father now has a laser printer and turns it off between uses just like he did with the inkjet. He now gets several thousand pages per toner cartridge vs the 1-10 pages per inkjet cartridge. He went through the 1000 page starter cartridge in the first 5 years so I guess he's up to a couple of hundred pages a year now. The current cartridge may outlast him.