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Majority of Americans now use ad blockers
(www.theregister.com)
This is a most excellent place for technology news and articles.
I really doubt the numbers. It's so common to see people complain about ads online, even in places like here where you'd expect most people to use adblockers.
All adblockers are not created equally and some of basically trojan horses to let some specific ads through or track the user in other ways.
I've definitely noticed when my adblocker of choice misses a youtube add or popup, the comments of that day specifically will be about how bad some ads are.