I had a chance to read through you article...and as I predicted, it was very informative, as well as thurough. (I also thought JustDressageIt's article on snaffles was equally amazing.) I only have two questions:
1. As I was looking at the pictures you posted, I noticed some of the bits had additional rings on them (as the pictures quoted above). On the first picture, I'm assuming that the rings next to the omouthpiece are for the chinstrap? In the second, I'm not sure. Could you tell me what the extra rings are for?
2. I know your goal with this thread was to educate, so I don't think you would mind. But could I print out your article for reference in case the entire internet suddenly stopped working for some reason? (I don't think it would happen, but you never know