Yahoo launches yahoo answers, Google already has a product similiar to that named google answers. Google answers has been a great help for everyone having questions about any topics they deal with or come across, Now yahoo has launched a product like that,
its named yahoo answers,

http://answers.yahoo.com

this is what yahoo says on what has to be done with yahoo answers

Asking a question
CategorizeWhen asking a question, you categorize it in a topic, making it easier for others to find and answer it.
Open QuestionYour question is open for others to answer for 14 days. You can extend or shorten this time period.
Voters' Choice for Best AnswerOnce your question is answered, select the best answer, or have the community vote for the best answer

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