(link: Spoilers 'do not ruin stories', study says) on the BBC website.
Interesting premise that makes sense. I guess it depends on the reader and the story being told.
The article made me think about writing in First Person POV, which I often use. Some readers have commented to me that they don't care to read First Person POV because they believe it means that, no matter what, the POV character will always survive.
Maybe this is true for many novels and stories. However, in the third novel of a SF series I have planned, the POV character does meet his end. I even have his final bit of dialogue written. (For what it's worth, the first novel in the series is written and has successfully run the slush gauntlet. It's awaiting a decision by the managing editor--been there a while so not holding my breath.)
What do you think about spoilers and/or First Person POV?