> Even if I don't click the button, Facebook knows that it served me the script. You can stop a lot of trackers by minimizing referer leaks. Firefox has the c

> Even if I don't click the button, Facebook knows that it served me the script. You can stop a lot of trackers by minimizing referer leaks. Firefox has the config option network.http.sendRefererHeader which defaults to 2, "always send referer." 1=same FQDN, 0=never send. So by setting it to 0 or 1, a typical tracker that's gotten past your /etc/hosts entries, adblock, etc. will see you requesting their pixel image but never see the sites that initiated those HTTP GETs. There are no silver bullets, just good tools, and reducing the referer footprint is one of them.