How long does someone have to watch a Facebook story in order to be noted as "seen"?
I have read somewhere that if someone watches the story for less than 3 seconds, it doesn't count as "seen" and the name of that person doesn't appear on the list of people who have seen it. Is it true?
Also, how is it possible that, for example, if my story consists of 5 photos, someone only sees the third, and not the first two as well? It would make sense if someone saw the first, and then decided he doesn't want to see more and closes the story, but how can someone only see a photo in the middle?