Luxury...treehouses?

I read an article in the Times the other day about a supposedly new phenomenon I had not heard of: the "luxury treehouse." The article says that there is now a title of "master treehouse builder" that didn't exist years ago, due to a "confluence of eco-conscious clients looking for sustainable hideaways and recent technological advances that allow elaborate structures to be hung higher and more safely than ever." I built a treehouse with my dad when I was a kid, but it was nothing compared to these designer treehouses people are building now. They even come with not only electricity, but a phone line, cable, internet, and just about anything else imaginable. The people getting the treehouses say its a way to be closer to nature...but not quite camping. I have to say, I wouldn't mind one in my back yard!

Image from the New York Times.