What a Bunch of Idiots!

So according to IMDB some people who bought tickets to Grindhouse were apparently unaware that the feature comprised of two separate movies -- and walked out after Planet Terror ended. How stupid can you be? It is clearly marked in all ad's "Two films for the price of one". This also helps prove one of my theories "American are Idiots"...LOL.

Don't you think it's clear from the poster it's two films?