http://coveryourtracks.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/about
In all the major browsers, there is an easy way to tell websites that you do not want to be tracked by setting the Do Not Track header. ( Do it yourself or install EFF’s Privacy Badger and we’ll turn it on for you in Chrome and Firefox.)