Almost 200 million people worldwide now regularly use ad-blocking software, the report said. About 45 million of them are in the United States, with almost 15 percent of people in states like New York and California relying on these services. The figures are even higher in Europe, where 77 million people use versions of the software. In Poland, more than a third of people regularly block online ads. —Study of Ad-Blocking Software Suggests Wide Use - The New York Times