So, in the video "Persuaders," which is the title of the episode of the PBS show called Frontline, explored the marketing and tactics of advertisers and how they try to be effective and whatnot.
They went into discussion about several key points for selling to consumers, the one I want to focus on is the use of the term, "Narrowcasting."
Basically, the idea of narrowcasting is making a 1 on 1 advertisement to a certain demographic of customers. It's basically to customize a message to fit a certain person or persons.

Now, I use AdBlock because I honestly dislike seeing advertisements because I have no money and they take up space. But I do notice on certain applications, like a the big company called Steam who are a PC video game realtor who eliminate the middle man of going to a store and buying a CD for a game and let you buy a game online that will be permanently on your account, have this narrowcasting as well or at least a form of it.Well, Steam has this whole tab dedicated to you. Or in reality, whatever data they have about you. The little question mark there when moused over says, "These are common tags on games you've recently played on Steam." Obviously, they are using the data of whatever it is that I play to try to recommend games to me. Another point, they use "recommendation" as a euphemism for "narrowcasting." Now you may be saying, "But Kevin, they're only trying to help you find games that you might want to play." Yes, I agree that they are, and to strengthen that argument, they are also using my data to find out what it is to sell me. That's narrowcasting, to try to sell specific things to specific people based on their specific data. And that's exactly what you can see here. There are currently 3 places where they tell you that there are things recommended to you on Steam; the recommendations by curators who give reviews on games, the entire recommended for you tab where they show off two games with the caption above that says, "Similar to games you play," and the tab in the photo that says "For You."
I would really love to be able to mess with the advertisers to make them upset. To me, advertisers and the paparazzi are basically the same. They violate the people's privacy, but that's a fallacy because it's a faulty analogy. Now overall, I don't really mind that Steam does this because they give me games I actually do want to play, and I don't really see narrowcasting as that bad of a thing. I just don't really value material objects so maybe that's why advertisements don't entirely have that big of an effect on me.