What can we do to improve this? Some may be answerable, and perhaps have just slipped off the front page and been forgotten until now. Others may lack answers because they are not a good fit for the site - do any of the unanswered questions need to be closed?
Are there any unanswered questions that need further clarification or additional detail before they can be answered? If comments requesting this have been ignored, should those questions be ignored, closed, answered hypothetically based on incomplete information?
It is perfectly possible to have good questions with complete information that simply don't get answered since none of us know how to, but I suspect most of our unanswered questions do not fall into this category.
I'm going to start looking back at old unanswered questions myself, so this post is both to encourage others to do the same, and also to seek discussion on general approaches to doing this.