On Saturday, October 20, 2007, San Francisco will go black for one hour (8pm-9pm PST) as it participates in “Lights Out San Francisco”. In addition, the citizens of SF are encouraged to install at least one compact fluorexcent light bulb to help reduce their energy consumption. In a show of their support, Google has changed the background of their page to black. This page is targeted at San Francisco users, since this is a local thing, so chances are you are seeing the normal Google page if you aren’t using an internet connection that traces back to San Francisco. This isn’t to say that you can’t join in and turn out your lights from 8pm-9pm. For more info, check out Google’s page and check out the official Lights Out San Francisco page.