The service is supported on iOS, Chrome, IE 9, Firefox, Safari, Opera and Roku devices, though those geographic restrictions keep the access pool quite limited.

ENGADGET

Browsing on Google Chrome, Firefox and IE 10 is fast.

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When you look at the past year you see trends that show a significant shift: IE and Firefox are losing market share while Chrome and Safari are gaining Chrome in particular has almost doubled its market share in the past 11 months, from 4.6% in December 2009 to 8.5% in October 2010.

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The anticipated add-on, along with similar tools already included in the Mozilla Firefox and Microsoft IE 9 browsers, leaves Google Chrome as the only major browser provider not to offer a do-not-track feature.

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