Ad blocking has grown 41% in the past year and it's costing publishers tens of billions of dollars

The number of consumers using ad blocking software worldwide has increased 41% year-on-year to 198 million monthly active users, according to a report published Monday by PageFair and Adobe. While that figure may only represent 6% of the global web population, ad blocking is expected to cost publishers more than $21.8 billion in 2015 in lost revenue.
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