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
Search engine privacy legal framework for privacy protections in terms of search engines has been put in place. However, scholars do write about the implications of existing laws on privacy in general to inform what right to privacy search engine users have. As this is a developing field of law, there have been several lawsuits with respect to the privacy search engines are expected to afford to their users. The Fourth Amendment is well known for the protections it offers citizens from unreasonable searches and seizures, but in "Katz v. United States" (1967), these protections were extended to cover intrusions of privacy of