Facebook vs. Greenpeace - who's right?

From Treehugger.com: You may have heard that FaceBook recently chose to power a new energy-hungry data server with coal-fired electricity at a new location up in Oregon. Greenpeace, and others, scolded the company--which many consider among the most innovative in the world--for making an big investment in the dirty fuel. Facebook retorted that by housing the server in the cool climes of Oregon, the equipment wouldn't need cooling equipment and would therefore be more efficient and less carbon intensive than if they had moved it to a location with access to more renewable power. So who's right? Is Facebook playing dirty, or is Greenpeace too harsh?

The full article is available at http://www.treehugger.com/files/2010/02/facebook-between-rock-greenpeace.php

Raz