The open theme continues today as we are announcing that we are opening up Yahoo! Search itself. That's right -- you heard it correctly -- the Yahoo! Search experience will soon be open. This open search platform enables 3rd parties to build and present the next generation of search results. There are a number of layers and capabilities that we have built into the platform, but our intent is clear -- present users with richer, more useful search results so that they can complete their tasks more efficiently and get from "to do" to "done."
Because the platform is open it gives all Web site owners -- big or small -- an opportunity to present more useful information on the Yahoo! Search page as compared to what is presented on other search engines. Site owners will be able to provide all types of additional information about their site directly to Yahoo! Search. So instead of a simple title, abstract and URL, for the first time users will see rich results that incorporate the massive amount of data buried in websites -- ratings and reviews, images, deep links, and all kinds of other useful data -- directly on the Yahoo! Search results page.
Check this video to know more http://tools.search.yahoo.com/newsearch/index.html
source : ysearchblog