Lightbeam for Firefox: find out who's tracking you online | Do Not Track
Lightbeam dla Firefoksa — kolejne rozszerzenie pokazujące, kto nas śledzi w Sieci
R. Hill on Twitter: "Interesting project: https://t.co/XUZ71RGDES It measures the use of 3rd parties across a collection of 25 high traffic sites using Firefox Lightbeam extension. Left pic = no blocking Right
Mozilla Lightbeam Helps You Find Out Who Is Watching You on the Internet - ABC News