I think businesses like Google are doing an excellent job in raising awareness for energy conservation.  The Google home page is “blacked out” as they have “turned out the lights” as symbol to raise awareness for Earth Hour 2008.  It’s quite striking to see the normally white background on the Google home page suddenly go black.  While its not saving any energy doing this, it certainly is going to raise a lot of awareness to everyone that goes to Google to do a search.  I checked the other top search engines and I don’t see any reference to Earth Hour on their sites.  I admire Google for taking a strong stand and reaching out to their entire customer base.