Many Windows users are still on XP, which is viewed as good-enough and not worth the upgrade troubles: http://www.neowin.net/news/windows-xp-market-share-goes-

Many Windows users are still on XP, which is viewed as good-enough and not worth the upgrade troubles: http://www.neowin.net/news/windows-xp-market-share-goes-down-in-february-2012 http://www.neowin.net/news/windows-xp-market-share-goes-down... If Microsoft would have written IE versions beyond 8 to work with XP, IE might have been able to hang in at #1 longer since the later versions of IE aren't as bad. I know I'll be happy when I see IE 8 usage drop sufficiently low in my logs to allow me to stop attending to its limitations while developing.