Many newspapers still run classified ads (https://en.wikipedia.org/wiki/Classified_advertising).
Many supermarkets still have boards where people can announce that they have something to sell, are looking for a house cleaner, etc.
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What about advertisement leaflets and letters to the editor in newspapers?
They just stopped caring when they made the input easier.
Just like websites stopped caring what ads they show.
On nearly every website with ads you can see scam ads
