Why a black google? Some studies say that having a black background instead of white helps saving energy. Based on these results, Heap Media Australia has created a black version of google they have named BLACKLE. For more info on this project, its characteristics, history, critics, you can check wikipedia (what else!). One of the advantages: there is no publicity. One of the disadvantages: it doesn’t have as many functions as google. Besides, there are different opinions about its efficiency: according to some research, for LCD screens the energy use could even be higher. Once again, energy efficiency is not all that simple. These are some of the tips that the official google site offers in respect of this matter.