It's not true, Mozilla actually tried to block them by default back in 2013 but was threatened by the ad industry and backed down. http://www.computerworld.com/

It's not true, Mozilla actually tried to block them by default back in 2013 but was threatened by the ad industry and backed down. http://www.computerworld.com/article/2495739/internet/ad-industry-threatens-firefox-users-with-more-ads-if-mozilla-moves-on-tracking-plans.html http://www.computerworld.com/article/2495739/internet/ad-ind... I think it was mistaken for Google paying Mozilla to keep it as default search engine.