I used it today to block "Hot Network Questions" on StackOverflow. The click-bait trivia was driving me nuts. I'm there to work and hated being distracted by that crap. Two clicks and ahhhh, much better.
They also asked the people why they played the lottery. A very large fraction of the people who said they had not noticed the ads repeated slogans and tag lines from the ads when explaining why they played.
(b) I notice ads more than ever now that I block them. I'm not as used to ignoring them, so when I see them, they stand out. Especially on mobile. Oh, not the content, not unless it's irritating or advertorial (or YouTube without YTO), but even so, it's interesting to notice adblock backfiring.
I wonder if there's a common ground between adblock and annoying that won't require advertorial?
However, so many CPCs are based on this model. If it's gone, how businesses can do commercial online?
I've got a new business model for that, but so far failed to draw enough attention, due to it's early beta without enough data to show. Interesting parties can view my profile.