Like you're on a new device or borrowing a computer, and you open a webpage - and literally every website blankets your screen with ads every-which-way and all kinds of permutations of springing up to try and get you to accidentally click on something. The actual news article or whatever is just an afterthought.
Literally - how the fuck do people use the internet without an adblocker.
I remember binging Noam Chomsky interviews a long time ago, and when he was asked about the new challenges facing the internet or something similar, Chomsky complained about how news sites slow down his computer so much with advertising. I thought it was funny because the interviewer was obviously wanting some deep observation about new media and Chomsky just vented about how trash the experience is now.