content: If you already use Privacy Badger and HTTPS Everywhere, you might want to consider uninstalling Ghostery. They cover most of the same use cases and Ghostery is owned by an advertising company. The “Ghostrank” feature collects information on ad tracking and sells it back to advertisers. It may be optional but that is some serious conflict of interest. Ghostery is also no longer open-source since it was bought out in 2010.