CWmike writes "Mozilla's Firefox browser is on pace to hit the 20% market-share mark next month. Net Applications marketing VP Vince Vizzaccaro didn't pin all of Firefox's increase on a change last month to its update dialog; he did note the new approach. 'Mozilla has implemented a change in Firefox 3.0 [Release Candidate 1] where the installation now has a checkbox that defaults to making Firefox your default browser,' he explained. He refused to ding Mozilla for the practice. 'The option is clearly displayed and labeled, unlike Safari, which misleadingly labeled the Safari install as an "update" [but has] since correctly changed to an 'install.' However, this practice is a break from the traditional practice browsers employed of defaulting this option to off.'"