The faster / slower rider thing interests me greatly.
I should perhaps explain, I'm relatively new to all this (incidentally, is there somewhere I could post an introduction or something?) Whilst I am learning, I'm not as fast a rider as some and I try desperately hard to be courteous and give way to faster riders coming from behind, especially on trails where a section of track is shared between people doing different grades of routes. So, it'd be very helpful for me if some of the double-black guys didn't treat me like pondlife in the process as they come hurtling past. I'm not saying everyone does it, quite the opposite as most riders I've met have been lovely, but every so often you get a clown and it's really intimidating and frustrating.
Please correct me if I'm wrong, but my thinking is that I've as much right to be there as anyone else, and both the trail literature and countless years of driving experience seem to agree that the person behind should give way to the person in front, but from the way some people barge past you'd think I'd stopped for a picnic in the middle of the singletrack.
Top tip to those guys, I'm not psychic, if you shout I will get out of the way pretty much immediately.