Adblocker (ich empfehle ublock origin) sind auf vielen Seiten aus sicherheitstechnischen Gründen schon unverzichtbar:
Dazu Snowden:
As long as service providers are serving ads with active content that require the use of Javascript to display, that have some kind of active content like Flash embedded in it, anything that can be a vector for attack in your web browser — you should be actively trying to block these