Safari has had Adblock for awhile too. The only reason its REALLY needed on Chrome is because Google are the kings of tracking your personal data and searches and its a must to use it. When I used to use Google, I would search a Ford truck or a guitar and then go into Facebook or a forum and be hammered with ads for Ford trucks and guitars. I hope everyone using Chrome knows every, single thing they do is tracked, have fun! Google is basically the devil.