This is prompted by a recent question about Drupal 8. I am not talking about the merits of this question in particular (I do agree that it was not a good fit for DA), but how do we want to handle good questions about Drupal 8?
The biggest problem that I see is that D8 is still rather immature (feature freeze will be EOY at the earliest), so there is a good chance that questions may be influenced by bugs and/or things that are still in flux.
I think we should discourage D8 questions, but don't actively burninate them.
Personally, I won't be taking a serious look at D8 until next year, so I won't be answering any D8 questions.
This is the only related question on Meta.SO that I could find, Is it okay to close questions about preview and beta products.