My website comes in top 10 of Google search result for some keywords. But why it is not coming in top 30 of Yahoo Search result. I need to bring in top 10 results of yahoo for some specific keywords.

They are different search engines. I have some pages that rank very well in Bing but less so in Google. If you have to choose which you want to rank in, pick Google. they have by far most traffic

I agree. Focus your efforts on Google as it is number one search engines, with Bing now coming in second.

Most preferred to target google search engine. The major traffic comes from google instead of other search engine.

Of course ranking well in Google should be a priority, but don't forget that Yahoo is the second most widely used search engine. It can't hurt doing well in yahoo result pages...
Not all search engines are using the same algorithm as google. It is widely believed that Yahoo for example gives more importance to on-page SEO than Google does, including meta tags like title, description, keywords. I do not precisely know if it is true or not, but it has to have some truth in it, since most websites rank differently in yahoo and google serps.
But all in all, I believe that the most important thing is to add useful and quality content to increase the number of the backlinks.
Having good content and lots of relevant backlinks is the key to rank well in all search engines.

SEO is the process of figuring out "key words", potential customers might use to find what the website is offering. The biggest benefit of SEO is that it helps you to gain an online presence for your business. One of the major benefits of SEO is that certainly you do not pay for every click, unlike PPC advertising where your online presence disappears the moment you stop paying for the ads. Other benefits of SEO include increasing your business benefits, sales and investment returns.

But how usefull is seo for yahoo, beacause google is the most used search engine?

Yahoo cares more about on-page optimization than Google. Yahoo is also more sensitive to the quality of links. If you build a bunch of poor quality links, you may find that Yahoo reacts poorly.

But do we have to follow different strategy to optimize a website in Yahoo??? What things you do to rank good in yahoo?? It is important as Yahoo is improving its services and trying to attract users to it.

I think yahoo give more importance to the On-page optimization like title, keywords and description. So try to make appropirate changes in on-page and it should be noted that content is also good for the site.

I frequent many SEO and Web Marketing forums on a daily basis and every so often there is a debate about the SEO industry and ethics. After being involved in a number of these debates, it has become really obvious that the main problems are the facts that no two SEO companies are alike and there is no unified methodology.

I agree. Focus your efforts on Google as it is number one search engines, with Bing now coming in second.

To rank websites, different algorithms are used by Yahoo and Google. However, doing SEO for Google will satisfy all the needs for Yahoo too. You should need to used all your SEO tactics for get effective results.

Yahoo Search will bring less traffic to the website.
In SEO Google Search is the best one to get huge traffic for the website.

I don't see no reason why you won't be able to do well in yahoo.You should work more on google for better results.

I think it is easier to rank well in google than in yahoo hence; I don't see no reason why you won't be able to do well in yahoo.

Create quality inbound and outbound links. The links should be interesting enough so that you can entice your reader into clicking them. But do not go on a linking spree. Quality of the links matters a lot these days. Irrelevant spam links can even get you penalized. Try to grow your site organically. Submit your link in various social networking sites. You can take help from affordable SEO service of directory submissions, article submission, press release distribution and others to better optimize your website for greater number of free backlinks. Create a good article for press release distribution and add a link to your website at the end of it. Find out the popular players in your area of work and get in touch with them. You can exchange links for your site with them. The presence of quality backlinks with manual directory submissions from authority websites counts a lot with Yahoo and other search engines.

To get website optimized at yahoo, you should use yahoo services like yahoo bookmarks/delicious, yahoo answers, yahoo directories, yahoo shine, yahoo news, etc. This will surely help you get at the first page of Yahoo search engine.