to go fake or not fake, that is the question!

Since its xmas time I've been thinking about xmas trees and wondering which is better for the environment, real xmas tress or fake ones.  My guess was real ones but I wanted proof.  Here is a good artical that states that real is the way to go. (Or like Sustainable Dave says, plant and grow your own and use it every year :))

http://earth911.com/blog/2008/12/05/an-expert-answers-real-christmas-tree-or-fake/