@mhoye The big, and main one I use is "First Party Isolation" brought over from the Tor project. Basically if you visit a website, it's cookies (and third-party cookies from it) are isolated from others. So if blah.com has a facebook tracking pixel, the cookie that pixel sets is different to the one from the facebook pixel set by foo.com, and different from the facebook pixel set by facebook.com. No more being tracked across the internet!