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. That represents 14% of global ad spend.
http://www.businessinsider.sg/pagefair-and-adobe-2015-ad-blocking-report-2015-8/#.Vch1JrUeEps