I've always been opposed to the "helpful comments.." thing, because i figure people shouldn't be forced into making any sort of comment, least of all to feel they should only be allowed to comment if they feel they have some advice "for improvement". I have gone to lengths to avoid the "Kewl, man!" type of comments, and that's prevented me from commenting more times than I can think of, because alot of times, that's the only thought that comes to mind; I've seen art here which I don't even feel worthy to LOOK at, let alone suggest advice for "improvement." ;)