I hope, the SEO techniques are common for all search engine. Unique and good content with perfect keyword is always best to bring your site at any search engine. Thanks
Yahoo answers would certainly help in website optimization. Yahoo answers will directly link to the particular website. Thus it is useful for optimization in yahoo.
I am just discussed with one of my friend (seo guru) regarding the same, is there any special techniques to optimize a website for yahoo! But finally no, it's almost same as google, There are little difference - only meta data: title, keywords, description and content strategy etc..
Meta tag Information is very important For Yahoo. My personal Experience, if your keyword in your title then it must be come in top ranking in short time. and other is "domain name" --If your keyword is in domain name then it must will come in top ranking.
Optimizing website in Yahoo is just similar to Google and organic SEO is usually used to get rank in search engines to increase backlinks and targeted traffic.