The trailer for Red 2 was released last week or so. As far as I know, it is finished

Yup, it was certainly released before. I remember that to be true a lot during the 90s, not really sure what it's like now. There are two tracks in Episode One's score that give it away, the one you mentioned and 'Qui-Gon's Noble End' before it.  The track for The Sixth Sense, and I'm saying this as the film is over a decade old and DIF have done a commentary on it is- Malcolm is Dead which let me guess the end as soon as the first scene ended. Huh.

1.A year or two. Give the film time to have been seen on dvd/blu but in forums, it is always safe to have a spoiler warning just to be safe.
1a. From what I can gather, I haven't seen This Is 40, the 'spoiler' they give is wrong anyway. *whistles*  I agree with Doc about TV spoilers, it is a lot harder to tell when it is ok to give them. I hear on other podcasts people giving spoiler warnings to, say The Wire, which has ended but not many people have seen it and  can still find it on repeats or on dvd.

2. Yup but I think it's safe to say we've all done it even if by accident.

3. If I know the person and what they like, I'll drop hints as to

4. Don't think so.....

5. Yup. Nothing major and my shitty memory is refusing to help me remember exactly what but I'm sure I have.

6. I read the end of The Sixth Sense by reading the back of the soundtrack a mere hour before going to see it at the cinema.

Stop making me want to see Twilight!!!!!!!!

I was about to vote in the DIF Ocars when I realised that I haven't actually seen any of the films nominated for Best Picture