Trail users who actually give a damn ride them with respect. They don't skid, they build (with approval from land management) sustainable trails that have minimal impact on the surrounding terrain / ecosystem, most of them perform trail maintenance as a way of saying "thanks for having such a great trail". MTB'ers as a whole get lumped into a pretty ******* catagory because of a small percentage of "bikers" who are jackasses. It's unfair, and the only way we can defend ourselves is to make our voices heard by joining local and national advocacy groups .