There's a fairly new off-road website out there offering all kinds of OHV chat and tech talk. Street 2 Dirt has tons of good stuff to offer you no matter what you ride or drive (quad, 4x4, buggy, rail, bike, etc.). Stac and I have started posting up some land use info there as well. So trail-saving is on their list. Cool.
Check them out and let me know what you think: http://www.street2dirt.com/