You can't get backlinks with search engines. I got more conversions through yahoo search engines. Also there are some places of the world that Yahoo is No.1 Search Engine, for e.g., Hong Kong.
Google is more popular a search engine than yahoo. It is like a continuous process. As some people use google, some other use as well. But yahoo is a good search engine. They lack in marketing I guess.
June 20, 2007, Yahoo! introduced to a characteristic of research selection based called Yahoo! Shorten. When activated this characteristic of research of based selection returned able the users to invoke the research usage only their mouse and receives research suggestions in to float windows while remaining on Yahoo! the property as Yahoo! Mail