If you invented something cheaper, more efficient, and more powerful than what came before, you might want to keep the recipe a closely guarded secret. Yet Facebook took the opposite approach after opening a 147,000-square-foot computing center in rural Oregon this April. It published blueprints for everything from the power supplies of its computers to the super-efficient cooling system of the building. Other companies are now cherry-picking ideas from those designs to cut the costs of building similar facilities for cloud computing.
http://www.technologyreview.com/business/38711/?nlid=nldly&nld=2011-10-06