I had links from Yahoo Answers and the traffic was insane, not to mention the sales that came from the traffic. The best part was all I did was create a great blog post and put an affiliate link in the post. Then somebody used the link to my blog post as the reference to their answer that was voted the best answer to the question and presto instant traffic. Until I looked at my site traffic referred site stats I had no idea about Yahoo Answers. If you have a link from Google Answers to one of your pages keep the pages up and running!