Bing (search engine) further to 20.9%. As of October 2018, Bing is the third largest search engine in the US, with a query volume of 4.58%, behind Google (77%) and Baidu(14.45%). Yahoo! Search, which Bing largely powers, has 2.63%. Since 2006, Microsoft had conducted a number of tie-ins and promotions for promoting Microsoft's search offerings. These include: Bing's debut featured an $80 to $100 million online, TV, print, and radio advertising campaign in the US. The advertisements do not mention other search engine competitors, such as Google and Yahoo!, directly by name; rather, they attempt to convince users to switch to Bing by
Web search engine formed the basis for W3Catalog, the web's first primitive search engine, released on September 2, 1993. In June 1993, Matthew Gray, then at MIT, produced what was probably the first web robot, the Perl-based World Wide Web Wanderer, and used it to generate an index called 'Wandex'. The purpose of the Wanderer was to measure the size of the World Wide Web, which it did until late 1995. The web's second search engine Aliweb appeared in November 1993. Aliweb did not use a web robot, but instead depended on being notified by website administrators of the existence at each site