DuckDuckGo @DuckDuckGo
.@mozilla & @themarkup joined forces to launch "Facebook Pixel Hunt," a study to "map FB’s pixel tracking network & understand the kinds of info it collects on sites across the web." U.S. Firefox users can join the study here: https://t.co/kfMLuS3O8y https://t.co/VdX7qR4vbK — PolitiTweet.org