In a lot of trailers these days, you get to see a green background screen with MPAA rating information.
I understand if a movie is rated PG-13 or R or All Audiences, but what I don't understand is "For Appropriate Audience." What audience is appropriate for this trailer? That doesn't provide a hint as to what type of audience is appropriate for this movie.
It seems arbitrarily lazy to not specify the audience category. Maybe they don't want to scare people away from seeing the movie if they actually say it is rated "R."
I could be wrong, but again, I am not a native English speaker, so it might be a cultural thing.