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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.
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.