I hang out at this other site, (I won't name it so the innocent can be protected). They have multiple levels: No critiques, critiques welcome, critiques ecouraged. The other thing about critiques is they seem to come in 2 flavors. 1. absolute, stuff that is error based, (floating trees, no antialiasing, etc. 2. Style based: This is the stuff that is like: "If I was doing this picture, I would do...". Have to be careful about the differences between the absolute and style based. Not everyone can critique the right way because that includes trying to understand what the artist is trying to do and giving tips on how to get there. I will accept praise because someone took the time to say "Good picture" or "Me, likes" and they did not just pass on by. If someone without a gallery points out an absolute error like floating objects when you did not intend to have floating objects, then thats a legit comment.