Privacy Badger is EFF's answer to intrusive and objectionable practices in the online advertising industry, and many advertisers' outright refusal to meaningfully honor Do Not Track requests. This week, Mozilla published research showing that privacy is the single most important thing that users want from their web browsers. Privacy Badger is part of EFF’s growing campaign to deliver that privacy by giving you the technical means to disallow trackers within the pages you read on the Web.
https://www.eff.org/privacybadger