Slashdot story points to an item on set--top boxes burning huge amounts of power: http://www.nytimes.com/2011/06/26/us/26cable.html?_r=4 They mention 400-odd KWh a year At 5 watts times 24 times 365, a plug computer comes out an order of magnitude better. This clearly is not the focus for the box, but it seemed worth tossing into the discussions.