Sorry that you feal this way.  As I see it, what others make is so welcomed to those of us who are unable to make.  The fact that I may down load somthing you offered is not that I am not greatful, I am and I am also sure we all are.  The fact that it is being Downloaded is a way of thanking you and like what you have offered.  We are greatful for it; if we were not, we would not ever download anything you make or keep comeing back looking for your great work.  We all thank you by comeing back and useing it in our renders, your work is all over the world, if we were not greatful we would not use them.  Please re-think this as to how manny people service you and you never thank them.