Websites have to be held responsible for ADs they serve. Otherwise they tend to make unfounded excuses we cant care less about. Like scam ADs on youtube.
Ads on Youtube are user-generated. If I were to upload a picture of you with your phone number as a youtube ad, offering sexual services, Youtube will likely be accountable in the same way.
Doesn't the site make user pay to show their ads? I thought it was the deal, you pay the platform to host your advertising, and that was one of the justification for the CJEU.
But user generated content? LOL, no.