In addition to Top Questions without accepted answer.
How to get a question marked as answered when the questioner doesn't? Can a moderator do this? Can it be voted for? I realize sometimes it's difficult to judge about certain subjects without the proper knowledge and you cannot always fully rely on up-votes only.
But on a QA site, nothing is more annoying if a question is highly answered, sometimes even with many up-voted answers and obviously also the correct answer. Still they seem to stay officially "unanswered".
For example, why can't a user loose reputation points for example when a question is unanswered for a month and the questioner seems inactive (about that specific question, or in general)?
It annoys me that I'm looking on my profile for the questions I asked and the answers I gave, and I see unanswered questions, that are open for a long time but that are actually answered. If the question is actually unanswered, not answered correctly, it's a recent question, or it's just not decided yet than it's obviously completely fine when it is unanswered.