http://www.campaignlive.com/article/ad-blockers-gain-ground-consumers-say-enough/1326412
I don't agree with the initial assertion in that article that it is driven by privacy. What they say later is more accurate, it is driven by irritation.
Research we have done suggests that Youtube has been one of the biggest drivers. The problem i that people then switch to a system that blocks almost everyone by default - screwing everyone who wants to play nice.
http://www.nytimes.com/interactive/2015/10/01/business/cost-of-mobile-ads.html?_r=0?utm_source=moz_top_10&utm_medium=email&utm_campaign=moztop10
The Cost of Mobile Ads on 50 News Websites
Example - L.A. Times
Without ad blocker - 178 files, 6.2 megabytes, 12 seconds
With ad blocker - 20 files, 1.7 megabytes, 3 seconds
Boston.com is much worse.