With the recent HBO hack and subsequent leaks, I think the question should be asked.
What is the policy to adopt toward question/answer based on leaked material ?
Several ways to see this problem can arise. To list a few legality, spoil exposition on this site, future changes between the leaked version and the definitive version. And I am certain that I am missing a lot in this problem.
EDIT : I am not talking about the problem of referencing illegal content, but can we base a question/answer on a leaked content, even without any direct link to this content ?