i was walking my dog the other day, all good lovely little dog path and all when some bloody great single speeder came charging up the hill, no sign of suspension forks, no geared riders with them. The bugger practically crushed the dog! think it was one of those 29er jobs, finally ages behind some huffing old guy on a full susser arrived and got the feisty one under control. Very apologetic and all but still, not nice.