Web search engine launched on June 1, 2009. On July 29, 2009, Yahoo! and Microsoft finalized a deal in which Yahoo! Search would be powered by Microsoft Bing technology. A search engine maintains the following processes in near real time: Web search engines get their information by web crawling from site to site. The "spider" checks for the standard filename "robots.txt", addressed to it, before sending certain information back to be indexed depending on many factors, such as the titles, page content, JavaScript, Cascading Style Sheets (CSS), headings, as evidenced by the standard HTML markup of the informational content, or its metadata in
Bilingual search engine Bilingual search engine A bilingual search engine provides multiple language search pages when users type keyword in one language. Obviously, this kind of search engine will give more detailed information for people who speak more than one language, although many mainstream search engines provide multiple languages services. However, the difference between a bilingual search engine and a multiple language search engine is a bilingual search engine will translate keyword from one language to another automatically. Google also published a plug-in (Bilingual Search Suggestion) for Chrome browser to meet the requirement of bilingual search,but it was canceled and unable be found