Search engine privacy better results to that specific user and provide the user with a better searching experience. However, search engines can also abuse and compromise the privacy of the user's data by selling it to advertisers in order to gain profits. Users must decide what is more important to their search engine experience: relevance and speed of results or their privacy. The legal framework for protecting user privacy is not very solid. A few of the most popular search engines are Google, Yahoo, Bing, and Baidu, but many other search engines that are focused on privacy have cropped up recently, such as
Search engine optimization per click; however, this practice was discontinued in 2009. Search engine crawlers may look at a number of different factors when crawling a site. Not every page is indexed by the search engines. Distance of pages from the root directory of a site may also be a factor in whether or not pages get crawled. Today, most people are searching on Google using a mobile device. In November 2016, Google announced a major change to the way crawling websites and started to make their index mobile-first, which means the mobile version of your website becomes the starting point for what