Wood is a sustainable product but only if the forests are adquately protected and maintained. The cutting down of trees seems terrible but the forestry companies spend thousands of pounds per year finding little terats to keep us loyally on their contact list. I have seen an amazing number of engagement strategies from allowing us to refuel for a less hard cash or if we print off coupons, we have to watch how soon those points arrive.. I have yet to look closely at my account to check what little gem I could do with. At once time the only perks that came to us were via stamps with little green shields on them, or sometimes the other set of palest pink. All of these were designed to make us spend more on the oil but not save anything in the environment – although fuels are a little cleaner burn these days.