I have been using Yahoo Answers to promote my sites so I know that it can bring direct traffic to your website if it is done correctly.
I have about 3 level 2 and 1 level 3 yahoo answers accounts.
You will need to supply me with the website URL and explain to me about your product & services, and also who are the people that you're targeting. I'll email you with an excel sheet containing the URLs to the answers that I have done for you.
I have several packages available:
30 Answers - $15
50 Answers - $23
100 Answers - $45
Sample is available upon request.
PM me to place an order today.