I want to make sure I understand where this concern over site use data is coming from. Is your point that "expensive" sites like The Whitman Archive--expensive to its creators, not its users--need to justify their cost by foregrounding how much use they are getting. In your footnote, you quote Dooley and Luce, "Does the level of onsite use of special collections justify the  resources being expended? What are the most appropriate measures by  which to evaluate use?” which leads me to believe that this, indeed, is your point. It's not entirely clear to me, though, that this is your point from the text of paragraph 3 itself.