I absolutely don't mind spoilers at all. In fact, getting spoiled beforehand only makes me want to look forward to watching things myself more. It builds anticipation for me, and only hearing about it is nothing compared to the excitement of actually seeing it. I even actively look up spoilers myself.
@echo i find it ridiculous, they may tell you that snape kills dumbledore but you still have to see it for yourself, you still have to see all actions culminating in such action, it's impossible that just a phrase will take away any of the the amazement when you see the movie/series/book by yourself.