Do you know how to use the yahoo answer and promote your business effectively?

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I sometimes use yahoo questions and answer services. It looks simple but sometimes You could hardly get a response from that services. I really want to make good use of this yahoo site to drive traffic for my business or maybe get some new referrals.However, I just don't know how to use it and don't even know the most effective ways to get referrals for my business by using this services. If you happen to know that, please tell me and share your experience with me. THANK YOU.