dehammer,
I didn?t read everything, but it sounds as if point of the blog is to say they didn?t test the mechanism in real-world conditions and that they didn?t look at other possible mechanisms. Therefore, they can?t make any claims about the magnitude of the effect or the relative contribution (given other possible mechanisms).
For that point, this may be true; but taken together with the statistical observations that started this thread, it is suggestive that the results of the Danish experiment may be pointing at a real world mechanism of noticeable magnitude. Granted, just because we observe the effect they suggest, it doesn?t prove causality. Suggestive, but more study is needed, eh?

~samwik

Pyrolysis creates reduced carbon! ...Time for the next step in our evolutionary symbiosis with fire.