Google: The global market share as of April 2012 is 80%. It is world wide famous search engine.
Bing replaces search engine images everyday, some people copies this images everyday and set them as their desktop wallpaper. Microsoft is coming out with a solution which would automatically set Bing image as desktop wallpaper everyday. Bing is released in the year 2009 just 2 years ago.
Please see below detailed market share of all search engines.
|Search Engine Global Market Share|