The problem here is that there is no exact ruling, there is no exact guidelines.
Most of the people here have broken strict copyright.
Even with giving credit, using someone else's work without permission is copyright infringement. Although fair use would have to be argued.
So, where is the line?
Obviously a picture of a women and the text "upvote for more" is blatant copyright violation. No link back, no text about how the picture makes you feel, or critique about the photo. Just blatant usage abuse.
I feel that that kind of post is an anathema to steemit because it provides nothing, while stealing someone else's work, on top of being a pure money grab. It is that poster has done everything wrong.
Now, if the poster did the exact same thing, pulled various pictures of women from various sources and then made artistic commentary we probably wouldn't care much. And if it was a good break down of the shot, such as a budding photographer could learn much, that person would probably have a strong following.