I have been testing different browsers and settings with Panopticlick.
However I can't find a single browser for which "Is your browser accepting Do Not Track commitments?" to show something different from "no". I have sent an email to EFF a few days ago but no reply at all.
Another strange observation: setting
user_pref("privacy.donottrackheader.enabled", true);
in Firefox results in decrease of bits. Putting the same value in Tor results
in increase of bits.
