I noticed this project a few years ago, and stumbled on it again just the other day. The Blackle project aims to save the energy that is wasted by preforming web searches. Here's how it works; the site is predominately black and therefore is more energy efficient than other search engines with a wider array or images and colors. It takes more energy for a monitor to display white than black, and the more colors that are displayed on a page the more energy that is required to properly display that page.
The tracker on Blackels' homepage is tracking the number of watt hours that have been saved by using their search engine as opposed to a competitor. I must admit it is an interesting concept, and as it says on their site it is the small steps that count.
Check it out at:
Posted by: Josh Nicholes