Here is the browser market share for May 2009, based on traffic to my top site:
Google Chrome: 5.03%
In May, IE lost another 0.71%, making this its 4th straight losing month. Firefox and Google Chrome both gained market share, increasing by 0.22% and 0.39%, respectively. It’s worth noting that Google Chrome, after having been stuck around 3% since its release until late last year, has been increasing steadily this year, now finally breaking the 5% mark. This increase did not directly come at the expense of Firefox, whose market share also rose during the same time frame.