I have yet to post a picture on here, but when I do - I want MaxBloom-esq critique on it.
If I thought the picture was crap, I wouldn't have posted it. Since I think it's a good picture, I'm posting it to either (1) show it off, or (2) find out how I can make it better. I can't find out how to make it better if nobody tells me whats wrong with it.
I don't really expect people to tell me how to make it better (but it's a plus if they do), I think they expect me to know how to fix it - I just need to know what to fix.
If you don't know how to fix it after people tell you what needs fixing, do some research on it, search the forums here, or start a new thread if you can't find out what you want to know.
For example, if someone says that a picture is too soft, they probably expect the poster to know what that means without having to explain what "soft" and "sharp" mean.