I am pleased to learn that the company I use to host my site has a sense of social and environmental conscience! They have calculated their total carbon footprint (no small thing running 1,300+ servers) which amounts to about 2,725 tons of CO² per year. They then did several things to offset that carbon footprint. I encourage you to read about it by clicking on their little icon to the left.
Being concerned about our environment is important to me. I respect their efforts!