Here is another example of trading mechanisms in new companies. It is company with a recent web 2.0 service for reducing and trading carbon footprints (for a fee). The service is called Little carbon feet and is in beta right now. Once you have balanced out your newly added air or car travel footprint you can use that to share with people.
They use the Chicaco climate exchange , mentioned in an earlier posting on this blog, to purchase carbon emission offsets.
They use the Chicaco climate exchange , mentioned in an earlier posting on this blog, to purchase carbon emission offsets.