Mike Vandeman, I would be interested to know how you stand on Fossil Fuels. What are you using to power your PC? How much plastic do you have in your house? When was the last time you went to a fast food outlet? Does your toilet have a half flush? Joking aside, mtb'ers do cause erosion, feet do cause erosion, the wind does cause erosion, rabbits do cause erosion. There just different types. You feel passionate about the world around you, that's great but please don't refer to me as a "vandalist". Mike I wish you all the luck in the world with your quest, just don't be so nasty to everyone. Thanks Matt.