it is an idea is that a company or a facebook page can put out a message for a specific population or less than that this message is only visible to that group of it because it will not appear on their own page in an electoral context it means that candidates can target individuals on facebook with negative messages against the other guy. and a date without journalists being aware because these messages will not appear publicly. discuss the result of. the manuscript. so dark posts are very personalized messages visible only to the person for whom they are intended how does it work exactly. let's go back to mr x. thanks to cambridge analytical trumps campaign knows he's in favor of carrying firearms so it will create a message just for him. for example did you know that hillary clinton wants to take your gun away and he'll receive this message in his facebook news feed at