[ferretchucker]

I was thinking...fairly often some sort of spoiler will be revealed on this site - it's a risk we're willing to take when we read here. But when does the "Spoiler Warning" become obsolete?

South Park once claimed that something is only funny after 22.3 years. Do spoilers have a time limit after which it is okay to discuss them? Is it relative to how many people know it? For instance, it is a fairly well known fact that in Psycho, Norman Bates is the killer (see how I didn't feel the need to put a spoiler warning on that?) However, I have a fair few friends who haven't seen Psycho and don't know that. Who are we to judge when it is fair to reveal the twist of a film?

Just wondered your opinions on this.