How long do you have to wait to "spoiler alert" a show?

Blurt stuff out as soon as it happens.
0% (0 votes)
Wait at least one day.
0% (0 votes)
Wait at least one week.
40% (4 votes)
Wait at least two years.
10% (1 vote)
It's never appropriate.
50% (5 votes)
Total votes: 10