Here is the browser market share for April 2007, based on traffic to my top site:
During April, IE continued its decline, losing 0.64%. What’s different from before was that not all that decline was picked up by Firefox — Firefox picked up less than half of the 0.64%, or 0.23%. The biggest gainer during April was Opera, which went from 1.89% in March to 2.21%, for a gain of 0.32%. It will be interesting to see if this positive trend continues for Opera going forward.