What is the mentality of people who send nets in a circle of friends?

Consider the following reasons when posting a network map in a circle of friends. First, the content he publishes needs pictures to set off. Second, he doesn't want to reveal more privacy. Third, the net map is more attractive and makes him satisfied. There may be other reasons besides these three, but in either case, it's just someone else's idea. As a spectator, just look.