It was my comment about burning fallen wood being carbon neutral and I am not good at explaining it myself so have taken this quote:
Carbon dioxide released from burning wood is equal to the carbon wood releases as it rots. One might increase carbon emissions using gas powered saws and spliters in the production of firewood, but when wood heat replaces carbon-producing fuels such as propane, heating oil or electricity from a coal-burning plant, then wood burning has a positive impact on the carbon footprint.
So that is the angle I was coming from and only in reply to a question about Aga's or Rayburn, I picked up on the quote about them not being green, because when you take into account that even an A rated electric cooker only has a shelf life of about 5 years, and that you can replace a toaster, kettle, grill, dry yours clothes over a Rayburn it becomes a viable option if you have fallen wood that you can use.
I agree with Coley when it comes to carbon offsetting, you would have to delve into every minute area of your life to achieve this and it would be far better to think about reducing, reusing and recycling, not just think oh I will have this thing/item/purchase that I don't really need and offset it elsewhere.