Yahoo search is now powered by bing engine so you're in a way talking about Bing's engine. Yes Bing is the second largest search engine after google.
Think Google is reaping the benefits of being the creator, the original, the discoverer. Only a huge blunder from Google or a radical program from Yahoo can turn things around. Is it possible, Yes! Is it probable, No! Not in the next 5 years. Then again I have been wrong. On Marketing concepts my eyes were opened wide thanks to The Customer Magnet. Have fun.
I'd say getting highly ranked on as many search engines as possible is very important if you run a website or online business.
Yahoo is not a bad search engine, but as the search amount using Yahoo is very poor, people are not interested to work for SEO in Yahoo.
i think that it is good enough. as it provides you with different links to millions of websites that are of your topic . it can easily display various pictures, video, and  LOT OF other tags.
For me Bing, Yahoo and Google are the best but base on my own hierarchical observation Google is the best followed by Yahoo and Bing.
I think Yahoo is still a good search engine for SEO but Google is still number 1. I am not sure but I also think that Yahoo has a new CEO. Let's wait for their new updates.
Google is the best Search Engine , yahoo too has got its own importance. But, yahoo cannot beat Google.
Yahoo is definitely a good search engine, but it needs to work hard to surpass its top-rated rival, Google!
Yes, I do. I confess that before some years it was slow but now it is powered. For this reason, I think Yahoo is good search engine for SEO. It is easy to work in Yahoo. It shows its products easily. Already, Marissa Mayer has sifted into Yahoo from Google.
i have no idea about yahoo.i use google and it seems to me good.without using yahoo i can not say which is good and which is bad.