There is a multitude of avenues to discuss photography. Photography criticism is not about talking about what sucks, but discerning the individual aspects of the art.
There's a fine line one treads when people wearing anything less than the sort of clothing one might wear to a formal dinner are involved in art: Where does something cease to be art and start becoming un-artistic pornography?
Some thoughts based on a conversation I had with a friend quite a few months ago.