The service, which enters public beta testing Wednesday night, is called BOSS (Build Your Own Search Service). With it, someone can build an independent Web site with a search box, pass users' queries to BOSS, process the results returned by Yahoo's search engines in any manner, and display the results. Essentially, BOSS is a bid to enable others' search innovation then share profits from the results. It's also the most significant example to date of , the company's effort to expose its own technology for outside developers in an effort to become a more indispensible part of the Internet.