nyt-mobile-ad-costHow do mobile ad blockers affect download speed and battery life? To answer that question, The New York Times tested the top 50 news websites on a mobile device. I’m not surprised that more than half of the page weight came from ads. What did surprise me was how bloated the boston.com site is. It clocks in at almost 20 megabytes with ads and 4 without. The Times estimates that loading the boston.com home page just once per day would cost a user $9.50 per month.

With unlimited data plans being a thing of the past, these are real costs for most users.