I watch those crappy cam movies because I want to know the story and plot. If I want to see the movie I will gladly pay for it. This happened for me with Tron and surprisely Green Lantern. I saw Ironman 3 about a week ago. And if friends ask me if I want to go I will.
Here is the thing I will preview the movie online, but I will pay to see in theater anyways.
I am fully spoiled anyways so it makes no difference to me now.
I know many will say it ruins the experience, but personally I don't need to see surprises or twists on screen anymore.
I go to the theater to enjoy big sound and picture not plots, twists and surprises, that I can do from home.