Recent talk about how computers are doing huge amount of damage to the world
Just watching Live Earth and their site, your computer even on all day only is 0.2 to 0.5 in terms of emissions which is apparently way below the national average for an electrical appliance, TVs on standby do more damage in this sense.
Do not know if its all true and exact but I would go alone with that, maybe not for some of our computers mind
but on average, yeah.