Comment by mproud

This would be an insanely cool premise for a short story!

We’d probably have more underground free papers with clever writing, littered with tons ads in them, circulating around in the black market.

But there would likely also be a lot of bad “telephone,” literal word of mouth, but the message might get lost, turning into disinformation.

On the other hand, there could be organized, sanctioned markets where you’re allowed to hock wares and show off product catalogs.