Hi Keith. I agree pretty much with your stance. What I'd like to add is that I think when somebody has made a critical comment or suggestion for improvement, then there is more of an obligation to respond to them to thank them for taking the time. I used to try to respond to all commenters on my images, but there just aren't enough hours in the day. I do, however, think it is important to reassure people that their critical comment is appreciated to foster the kind of community spirit you and I would both like to see. Best wishes, Simon.