Is it ok to do so? If yes, what do i have to keep in mind? The thing is that theres a picture i saw and i contacted the person about it but never got a reply so i wanted to post it here and have a discussion so i can hear what you guys think.
Sorry, Antarctican is right. It is not allowed. But ... ... you could put it up in the Photographic Discussions, as a link only, and put out the question on how the others think this (whatever it is that fascinates you so about the photo) could have been achieved.