Firefox Celebrates Its 5 Year Anniversary by Reaching Another Milestone

Firefox is five years old this week.  It has also reached another milestone, attaining 25% usage share for the week of November 10th.

"What an exciting milestone for Mozilla, particularly as we are celebrating five years of Firefox this week," said Mitchell Baker, Chair, Mozilla.  "The momentum around Firefox adoption has been truly astounding."

Windows 7 Breaks 4% in Daily Tracking - Comparison to Vista

Windows 7 has crossed 4% in daily tracking.  In comparison, Vista took seven months to get to 4% usage share. Here is the historical data on Vista share:

Month	Vista Usage Share
November 2006 (released to businesses)	0.11%
December 2006	0.16%
January 2007 (released to consumers)	0.18%
February 2007	0.93%
March 2007	2.04%
April 2007	3.03%
May 2007	3.75%
June 2007	4.54%