Ironically a bit thankful to Microsoft for her recent efforts :p Yahoo is now further opening her searching API for developers, allowing everyone to utilize the entire Yahoo search index and customize the result display.
BOSS (Build your Own Search Service) is Yahoo!'s open search web services platform. The goal of BOSS is simple: to foster innovation in the search industry. Developers, start-ups, and large Internet companies can use BOSS to build and launch web-scale search products that utilize the entire Yahoo! Search index. BOSS gives you access to Yahoo!'s investments in crawling and indexing, ranking and relevancy algorithms, and powerful infrastructure. By combining your unique assets and ideas with our search technology assets, BOSS is a platform for the next generation of search innovation, serving hundreds of millions of users across the Web.
We do not know to what extend can we manipulate the logic, but it is one step further for an in-depth understanding of the Yahoo algorithm. Instead of doing the normal site customization, link building and baiting, we can consider to do it in the programming level. For now, all we need to do is to apply for a BOSS account and get the application id.
For sure, we will need to read through the documentation as well, as in here: