For those unfamiliar with the "series of tubes" quote, this phrase arose from Senator Ted Stevens' rather inarticulate explanation of how the Internet works. He reported that one of the tubes had gotten blocked up, preventing one of his important emails from being transmitted.

John's essay presents an interesting and hopeful perspective on economic sustainability in the digital age.

My brothers and I are all working on sustainability issues - and caught the attention of the greenprophet blogger!