G'day Matt,
As Skyring also mentions, is there any logical reason why fiction articles should have spoiler warnings but e.g. sports articles should not? If I haven't seen the game yet, it's my responsibility not to go reading things that might tell me the score; if I haven't read the book, likewise.
I quite like this question, too (oh, and welcome back, Pete).
Why *don't* we have spoiler warnings in sports articles?
Is it because the editors on sports articles don't bring the whole fanboy culture along with them?