IE8 has managed to achieve explosive growth, but it isn't enough to make up the losses being sustained by IE7 and IE6 both. As a collective, the browsers are estimated to hold a combined market share of under 55% in the United States. Those figures vary wildly based on who is doing the measurement, with some estimates still giving IE a comfortable 72% share. Still, the correlation between an increase in IE8 growth and the decrease in IE6/7 users cannot be ignored. It is clear that users already making use of earlier versions of IE are apt to switch, but that Microsoft is having a tough time “bringing back” those who made the switch to alternative browsers.
Will alternative browsers keep positive growth, or will IE8 manage to win back lost customers?