Re: Who knew ?
"Static images and text hosted by the website you are visiting might be less convenient to bust people's privacy or manage for the advertiser"
OTOH there might be less need to bust privacy. The page has specific content. In many cases the ads can be related to that. If, for instance, I'm looking at a site giving hints about laying block paving advertisers need know nothing about me to make it worth while advertising block paving materials, tools or services on that page.