I don't use Facebook so I can't. And that in itself may be one of the culture changing factors. Facebook has very few filters. Why people put up with the mess that is modern Facebook is beyond me, rewards just outweigh negatives I guess.
Oh actually I could. Yes that is very weird behavior, did you see this kind of thing a lot?
Also within the first third of the movie you kind of know 80% of this or suspect it.