Content-based ads are worse , though, depending on the site. I believe ad spending is never going to go down, even if advertising is very ineffective. It's some

Content-based ads are worse , though, depending on the site. I believe ad spending is never going to go down, even if advertising is very ineffective. It's something that you need to do to expand a business and there is no alternative. https://cdn.static-economist.com/sites/default/files/images/print-edition/20170401_WBC308.png https://cdn.static-economist.com/sites/default/files/images/...