Carbon footprint is only part of the effect we have on the environment. Another way to look at it is to measure energy consumed. WattzOn is a brand new (alpha) site that lets you calculate your total energy consumption - from transportation to food and goods purchased. Not just the energy consumed by using something like a cell phone, but the energy it takes to build it amortized across the projected life. Here's what they say about the calculator:

WattzOn allows you to measure the amount of power needed to support all of the aspects of your lifestyle. By calculating every impact in watts, all the varied choices made in your life can be directly compared - including actions that happen on markedly different timescales. Measuring in power rather than carbon emissions also recognizes that there are not enough remaining fossil fuel sources to support the energy needs of the world. Not limited to activities, you can also determine the impact of your belongings through the embodied energy database. WattzOn is opening up the assumptions, the methodology, the mathematics, and the data to the entire community of users to modify, tweak, and eventually reach consensus so that WattzOn's power estimates improve over time.

I calculated my energy usage with their simple form - did not go to the trouble of creating and the mass, lifespan, and materials component of my MacBookPro, for example. Because I walk to the office, my transit burden is pretty light; and chicken and fish rather than red meat makes a difference. Still, my annual consumption is 6,543 watts. My CO2 output is the equivalent of 1,384 one-foot balloons a day. Yikes! That's a lot of CO2! Just check out the comparison to residents in some of the other countries around the world. BTW, the top ten users are: Qatar, Iceland, United Arab Emirates, Bahrain, Luxembourg, Netherlands Antilles, Kuwait, and Trinidad/Tobago, Canada and the United States. Sign up and see what you come up with.