I tried a strategy for a while of going through the oldest unanswered questions and posting a reply that said "This is a generic response to your question from an individual not affiliated with Yedda.com or AOL. Your question has been viewed by (fill in the blank number) people and no one has answered it yet. This usually indicates a problem with the question, and it may be not answerable in its present form. Please delete this question and ask it again."
Of course, this note is outdated since a question can no longer be deleted. In only one or two cases was the person still interested in getting an answer, but these were the oldest unanswered questions, not fresh ones.
Sometimes when a question seems really obtuse, looking at the topics or the reference to the page where they came from or asked the question at provides some clues or context to their question.
Now, as to your question, how do we educate Yedda users (actually over a hundred different sites feed into Yedda, so sometimes these are AOL users, or Querycat, HomeTips, and etc. users) to ask questions in a more understandable fashion? That is a good question.
Other people have been trying to solve this problem, too. Any ideas you have should be sent to the staff through the "feedback" link in the top right corner of your screen. I'm serious about this, they do want to hear about stuff like this.
If you updated my strategy and used it on fresh answers, I'm pretty sure the staff wouldn't have a problem with that. They give us fairly free play to interact with each other. When they see someone doing something strange, unless it is abusive or nasty in some way, they sit back and watch.
As to how to educate them before they even ask a question, that may be close to impossible, and some of it is our own perception, since a lot of the questions come from other countries where English is not normally used. Sometimes translations suck, and sometimes syntax gets really twisted when someone uses it as a second or third language. I give them credit, they can speak and write more languages than I can.
Sometimes I will have several exchanges with a person before we can hammer out their real question. Sometimes, if they mis-ask in a way that allows me to crack a joke I will take advantage of it, but that's a personal failing. Mostly I figure that those who are the least able to express themselves and formulate questions and coherent thoughts are the ones who most need my help. Unfortunately that is very time limited and not everyone (or even a small fraction) can be helped. As it is, a response this long takes me a half-hour, and I have to try and choose where, when and how I'm most effective (in addition to trying to have fun along the way).