Seeing a movie for the first time can be an exciting experience, especially if the film has great plot twists. How do you talk about the great movie you saw over the weekend without spoiling the plot for people who haven't seen it?
I'm getting tired of friends saying things like 'no spoilers' about a movie they saw even though a movie has been out for more than a month. I personally think if someone hasn't seen a movie that's been out for a month people should be able to talk about the movie.
The answer:
When it comes to spoilers, gauge your audience and who you're talking to. If you're talking to someone who has desperately wanted to see a movie and they haven't gotten the chance yet, don't talk about the movie in front of them.
All movies aren't created equal and some movies, you could ruin forever with a spoiler. Think about movies like The Blair Witch Project or The Crying Games that have major plot twists and hooks and how revealing information about a movie like that could ruin the fun of watching it. There are movies that cross out of that territory and become part of the general consciousness and you can talk about them without spoiling anything.
In our online environment so many people are talking about so many things, you can manage what someone hears by putting an audience selector at the top of the article to make sure the right people are reading the article. That's no audience selection when speaking with someone, so just being courteous and asking someone if they've seen a movie is a good way to avoid spoiling a movie for someone.