In my newsletter last week, I criticized “National Treasure: Book of Secrets” -- or rather, its ads. I pointed out that the trailers for this movie were teeming with scenes, lines of dialogue and shots that were not, in fact, in the movie.

This week, I want to share some of the reader feedback. I realize that I’m straying from my usual technology focus, but this business of movie trailers turns out to be a hot topic. Besides, today’s installment has a surprise ending that’s too good to withhold.

Anyway, lots of you agreed with me:

* “Putting scenes in the trailer that aren’t in the movie crosses a big line with me.”

* “When was the last time you bought a book and found that the extract on Amazon isn’t in the book? And when was the last time you bought a CD and found that the pre-released single isn’t on it? Never? So why are film studios allowed to do it?”

But more of you had other gripes with movie trailers:

* "What should make us all angry is trailers that give away important plot points. I’ve taken to calling going to films ‘trailer confirmation.’