Here Are Few Paragraphs From The Book:
Tip #1: Focus on answering recent questions, posted within the first three hours.
Tip #2: Always post a relevant website link in the Source box using a URL that sounds similar to the topic. (example: If I was answering a question regarding weight loss, I would create a landing page specific to that niche and include it in the source box: yourdomain.com/weight_loss_tips.html)
Tip #3: Answer questions as thoroughly as you can. The more specific you are with your answers, the better chance you have of being selected as the top choice.
Tip #4: After your limits are raised and you are able to answer more questions each day, start answering questions regardless of when they were posted (older ones are fine at this point). Every answer you submit will be included in Yahoo’s search engine results page regardless of how old the original question was.
Tip #5: Be sure to include your keyword (that you are optimizing for) in your answer as best as you can. You can also add your URL (using a href tag) but if you do this incorrectly and your answer reeks of spam, you will not be chosen as the top answer and in some cases your answer may be removed completely.
Tip #6: It isn’t just Yahoo’s search engine that will pick up your answers (and links). Google may also spider your answers and give you credit for a back-link to be sure to answer as many questions as you can each day, until you reach your limit.
Tip #7: Stick with it. Building an impressive portfolio and developing your back-links takes time but if you create a strategy where you are answering questions on a daily basis, incorporating your keywords into your answers and linking to your websites within the source boxes you will see results relatively quickly. The more effort you put into answering questions thoroughly and being chosen as the top answer the more traffic your website will receive. Always keep this mind when you are answering questions. While quantity is important, so is quality!