Really, really poor article on Guardian website...
http://www.guardian.co.uk/environment/ethicallivingblog/2009/aug/05/mountain-biking
Seems to be a weird and random collection of half arguments and falicies. Rather disappointingly it seems as though it has been written by a "mountain biker".
There are undoubtably issues surrounding the environmental impact of travelling to trails etc (I'm sure Singletrack did a discussion piece on this a couple of years ago), yes, irresponsible riding can cause some trail damage... But publishing a sensationalist and short-mind couple of hundred words really isn't going help.

