+1 to the "fine unless it tries to deceive" school of though, and I'm very happy with Wayland's position.
One pet peeve. I quite regularly see a full face image of an animal (strangely, it's often a grey wolf, in b&w), which is a technically excellent image. The problem I have is that if the photographer had tracked the animal, or hid for days in a hide, that's one thing. If they have turned up at their local zoo, then for me, that's another. The quality of the image is the same, of course.
So, I would like the caption to say how and where the image was taken, as well as the EXIF details.
I won't mind if this is a minority view