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  Disconnect for Firefox 9 Dec 14

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  Adblock Plus for Mozilla Firefox 4 Mar 16

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  Firebug 1 Jan 15

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  Google+ Share 21 Jan 15

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  DuckDuckGo Plus for Firefox 21 Jan 15

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  Walnut for Firefox 21 Jan 15

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  Ghostery (for Firefox) 14 Feb 15

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  Default FullZoom Level for Firefox 11 Apr 15