What would serve as a good comparison for evaluating your carbon?
At the moment Dopplr shows you the raw figures, but we realise without independent research it's tricky to know what that means.
We're chatting with the good folk at http://www.amee.cc who power our calculator about this, but wanted to open up the discussion here...
BTW - a while back I asked what the carbon footprint of freezing Han Solo in Carbonite would be (http://tinyurl.com/6mac24), but I figure we might run into some trouble if we used "Solos" as a unit of comparison... ;-)