
Clearly, at 90 percent effectiveness, ad blockers represent an existential threat to any advertising-supported site. ESPN didn’t play the video, though no message was displayed. With Chrome, 9 of 10 videos (including CBS) did play without a preroll ad.
#Cnet adblock plus plus#
On Firefox, Adblock Plus removed those ads on 9 of 10 sites, with CBS displaying a banner that said the video wouldn’t play because the ads were blocked. Safari played a preroll ad on all 10 sites. sites, including YouTube, CNN, ESPN, CBS, and CNET, using Safari without an ad blocker for comparison. How effective are ad blockers? I installed Adblock Plus on Firefox and competitor Adblock on Chrome and tested 10 popular U.S. The installed base of ad blockers varies greatly by geography, age group, and operating system, but by June 2014, Irish company PageFair estimated that there were over 144 million active users. Second, ad blockers hide elements on the page with certain classes, like ads, so the page simply displays without them.Īd blockers were born around 2002 as a response to intrusive advertising and to sites that used malware or spyware. In the case of video, since the advertising network never receives the call, the ad doesn’t show up, and the player goes on to the next chunk of content. First, they monitor the outbound calls made by your browser and block any calls to known advertising networks. In short, ad blockers are browser add-ons that work in two ways. This is the situation with Adblock Plus, an ad blocker owned by German developer Eyeo.

What do you do? Call the police? The Feds? Well, if you’re Microsoft, Google, and Amazon, you pay the 30 percent. Then you get a call from the Germans who offer to make your customers pay, but only if you pay them 30 percent of the regained revenue. Even worse, you still have to pay for delivery. You’re a business owner, and you just learned that a German company invented a technology that lets customers get your product for free.
