Everyone receives the questions on WikiAnswers. When you put your question on the site, anyone who visits the site can see it. A wiki is a user editable site, so most who see your question can answer it. Those who are blocked from answering questions cannot do so, of course.
Wikianswers receives many math questions asking for conversions into centiliters. What is a good definition of centiliters, I wondered.
Yes , you can answer the questions on wikianswers.
There are over 600 questions about Michelangelo on WikiAnswers.
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There are over 6,500 questions about poets on WikiAnswers.
WikiAnswers visitors ask questions. You wrote this one! :-)
There are over 20,000 questions about entertainment and arts questions on WikiAnswers.
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You cannot demand answers from WikiAnswers on your questions. WikiAnswers does not answer your questions, it is the members of this community that answer your questions. You can request for your question to be answered but not demand for the same.
You can recategorize, answer questions, edit questions, and do much more on WikiAnswers.