Websites depend on other companies to sell and serve advertising, deliver content and provide analytics and research. Those companies collect and use information about your activities and interests on those sites, unless you opt out by installing a special browser cookie for each network.PrivacyChoice Opt-out is a Firefox add-on that writes and preserves all of those cookies automatically. The add-on checks the PrivacyChoice database for new opt-outs or updates, so you don't have to install an add-on update each time opt-outs change. You can always review and change your preferences in your PrivacyChoice Control Panel.Learn more about how online tracking works and your choices at privacychoice.org. Get answers to your questions and see the terms and conditions in our FAQ. Requirements: · Mozilla Firefox