I consider movie trailers a net gain. Not if they go too long, but a few good trailers can cue you into good films to watch. Then there's advertising like, "T

I consider movie trailers a net gain. Not if they go too long, but a few good trailers can cue you into good films to watch. Then there's advertising like, "This restaurant is at the next highway stop" which just gives you useful information." There are many other examples.