In August 2011, Gartner estimated Apple's PC market share in US as 10.7% for Q2 2011. Apple's worldwide market share is not listed, because it is not in the lis

In August 2011, Gartner estimated Apple's PC market share in US as 10.7% for Q2 2011. Apple's worldwide market share is not listed, because it is not in the list of top 5 computer manufacturers, and is inferred to be 5% or lower. http://en.wikipedia.org/wiki/Usage_share_of_operating_systems http://en.wikipedia.org/wiki/Usage_share_of_operating_system...