I don't want to offend anyone by writing something that isn't worthy of
posting (and I'm not trying to be facetious when I write this); and I want to
maintain the integrity of this listserv; but I (and perhaps many other
subscribers) don't exactly know what's appropriate and what's not.  As
Stephanie noted, there appear to be a lot of gray areas here. 
P.S.  I really enjoy the posts regarding warm-up exercises, mounting
exercises, etc.
        For example, warm-up exercises may not be the same for the endurance
rider 
        as it is for,  let's say, someone who does dressage.  Where do we
draw the 
        lines?