Facebook's new data center had not come without its fair share of controversy, primarily because it is using electricity from a coal-fired power plant -- something Greenpeace is not letting go quietly by. However, the company is working to make the data center as energy efficient as possible, since that is simply smart business sense. GreenMonk has a great write-up of the strategy Facebook is using to gather the brightest ideas for the best data center they can create. Will it be enough? Well, the numbers are impressive.