For all the talk among among policymakers and the press about online privacy, it still isn’t clear how much average consumers are even aware of online ad tracking. Firefox, the browser of choice for a third of all internet users, is apparently looking to change that. The beta of the latest version of Firefox trumpets the new “Do Not Track” feature prominently—listing it, in large font, as the very first item on the “What’s New in Firefox 4” page. The move could increase the pressure on other browser companies as well as advertisers to beef up their own privacy options. 

Mozilla announced months ago that it would put a Do Not Track option in the new version of Firefox—so in that sense, the release of the beta version isn’t a surprise. But what is unexpected is the headline “Opt Out of Ad Tracking” splashed across the company’s upgrade page.