If we do this, I think that it might be important to be mindful that our advice should be limited to times when people ask. Photography is art. And art is emotional. And people often have part of their sense of self tied up in their art.
[/armchair psychology]
I, for one, would welcome all the advice that anyone is willing to give. I love being wrong (or sub-standard). That means, that with help and awareness, I can get it right-er next time.