How does WikiAnswers know everything about every question?

Well, we don't know everything about every question, although we try!Wikianswers is not a magic 8 ball, WA doesn't actually answer the questions. People in the WA community answer the questions. Anyone who sees a question that they know the answer to can answer it. So I am sure there are a handful of question that people have submitted that cannot be answered. But the community does their best to answer all questions that they can!