1.) No, very stranger things happen. It happens everyday this is why you shouldnt even think about sending nude photos.
2.) No i do not worry about what I post or send because it is not nothing that the public couldnt see. I dont send nothing that im ashamed of.
3.) I do not think they should get prosecuted, but yes some trouble wouldnt hurt. but You shouldnt put nude pictures on the internet because anyone can see it.