I couldn't agree more! Twice in recent memory the same person has seen fit to leave a comment on one of my pics along the lines of "Why don't you create something original next time". (Apparently this is what I get for putting credits on my images.) One of those pics I've since deleted, the other is still there and I would LOVE to be able to delete that snarky remark. But I can only do that by deleting all of the comments. I have no problem with constructive criticism. I love it. But this is not constructive, it's petty and unfair. OTOH, I won't respond to that sort of thing. "Feeding the Troll" just encourages it.