>>10: I have no idea what the hell you're talking about. The Mac OS has always used triangles for this, and they have always had the function of expanding or collapsing a list or showing more options in a window; they've never been ornamental bullets. Link to wherever you're finding this BS, please?

As for another alternative, just plain text links or HTML buttons saying "Show More Options" or "Show Less Options" or something would be ugly, but still make more sense than "plus" and "minus."