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  Tamper Data 9 Jul 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  HTTPS Everywhere for Firefox 11 May 16

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  WebMail Ad Blocker for Firefox 15 Apr 15

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  Greasemonkey 1 Jan 15

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  Free Slots 1 Jan 15

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  Ghostery (for Firefox) 14 Feb 15

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  Click&Clean for Firefox 1 Jan 15