Stock firefox, default tracking protection. I received a single nag about free articles that was easily dismissed. One first-party subscription ad at the bottom of the right column, another at the bottom of the article. No other ads of any kind.
I got two. For those that don't know, a good portion of these nagging modal windows play nice in the sense that pressing ESC closes them - good to be able to instantly dismiss them without having to hunt for the close button. The first one I saw could be closed with ESC, the second one required clicking "Close".
