Require that every user must be shown the exact same ads (probabilistically). Don't allow any kind of interest or demographic based targeting for paid content.
Advertisers would still be able to place Ads on pages they know there target audience goes, but wouldn't be able to make those same Ads follow that target audience around the internet.
But not guess a language based on the content of posts.
So what if I have a website based out of the counter and accept advertisements? Are you going to tell ISPs to block those foreign websites?
Let me tell you a little story. The state I live in just passed a law requiring all porn sites to verify age. Guess how many porn sites not based in the US ignored the law entirely? Guess how many who did folks the law can be viewed over a VPN? If you guessed “lesser than 100% between both, you would be wrong.
You really like where this is going?
Again I gave you an example of what happens when you try to regulate the Internet - porn companies completely ignoring Florida law?
Again, why are foreign sites relevant, and why does this idea seem hard to grasp?
Do we tell US companies they can’t buy advertising on foreign sites and that those foreign sites can’t be accesed from the US?
We have an existence proof of what happens when a government tries to restrict what people can see on the internet. I live in one of the states that require porn sites to validate ID. If you add all of the sites that ignored the law completely and all of the sites that you can access via a VPN, the number you get is 100%
Browsers typically send Accept-Language headers so you could easily return ads in languages matching that header, without having to analyze your posts.
It’s like switching on to a Spanish TV channel and getting Spanish speaking ads. It’s not targeted because you are signalling you probably understand Spanish.