Yahoo has launched the Yahoo! Search BOSS (Build your Own Search Service), a web services platform that allows developers and companies to create and launch web-scale search products by utilizing the same infrastructure and technology that powers Yahoo! Search. Yahoo is touting their Search APIs as a free-for-all, unrestricted platform which users can fully utilize to implement their own search engines.
With Yahoo Search BOSS you can do many things including access Yahoo! search results, combine them with other sources, re-ranking search results, presenting search results in any form that users want, mashup search results with other data sources, access to web, news and image search and unlimited number of queries per day.