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  Annotary 21 Jan 15

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  Disconnect for Firefox 9 Dec 14

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  Greasemonkey 1 Jan 15

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  DuckDuckGo Plus for Firefox 21 Jan 15

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  Simple Adblock 16 Apr 15

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  HTTP Header 16 Apr 15

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  WOT (Web of Trust) for Firefox 20 Sep 15

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  Zotero 26 Jan 15