goreydetails - Dark Search Engines

Apparently, if Google had a black screen, 
taking into account the huge number of page views, 
it would conserve 750 mega watts/hour of energy per year.

In response, a black version of it's search engine was created,
called Blackle, 
with the exact same functions as the white version,
but with lower energy consumption.

 Also check out google's dark counterpart
Googoth