I often find photos in the most ordinary places. Many of the subjects are nothing special either. They are just the beautiful things all around us that we don't make the effort to see truly.
We don't want to be unkind, and therefore may be less than honest in giving negative feedback about images. I say let it all hang out! One learns little from someone telling us our work is "great" or that they "like it". In fact, it can further egoistic "gee - I'm an artist" attitudes that interfere with our true artistic progress. Just like NASA, we learn more from studying our mistakes than our successes. So, I hope we won't be diluting the negative feedback in our very valuable critiques.
I believe that a spectacular photo of something ordinary is more interesting than an ordinary photo of something spectacular. The latter is about something else, the former is something else.