i also want to know this

Many of my friends already provide the answer but keep in mind yahoo provide No Follows backlink

Yahoo Answers – This is a personal favourite of mine and whenever I have ten minutes to spare I will head over to Yahoo Answers to answer a few worthy question. There are question on Yahoo Answers about practically everything so stick to the niche of your blog and in the resource box at the bottom include your blog domain.

you should better to concentrate on writing an answer that suitable for the question so that people automatically find your profile to contact you.

You can leave your link as source of information. It's give me back links.

Yahoo! Answers: Tips on Contributing Successfully

1. For a start, spend at least 5 hours per week answering questions to build up your Yahoo! Answers score and gain recognition as an expert in your field. Later on estimate your conversion rates from Yahoo! Answers, and decide on the time you can afford to spend there.

2. While browsing Yahoo! Answers, analyze what makes particular answers chosen as best ones in your niche. Also monitor Google Discussions to see what kind of questions rank high for your keywords. This will give you an idea of what questions to target and how not to lag behind other contributors when answering.

3. Shoot for a highly ranked profile featuring best answers: be picky about the questions and orderly about the way you answer.

4. Choose questions that are interesting and related to your niche. Avoid spamy one-liners from level 1 accounts like "who is the best web designer in India?/what is off page seo?/why some people like dogs more than human beings?" – they will most likely be deleted.

5. Pick questions with the least number of answers (sort by fewest answers) – this will increase the chances of your answer to be chosen as the best one.

Well I must say it is hard to keep up on YA, been there done that.
And I never heard of Google Answers?? I don't think there is such a thing.
Anyway, how about Quora?

You can create back link from yahoo through answering the questions.

Nice topic to discusss

that's good . Thanks you very much

ok! that was awesome! thanks for posting.

.................................................. .................................................. .............................

(Dịch: up cho thớt bay lên cao !)

.................................................. .................................................. .............................

Select your topic for your website and post amazing answers.

You may want to check out Quora. It seems that Yahoo Answers doesn't actually allow you to post a link or source until after you have reached a certain level.