TL;DR - Timo Zimmermann believes that your web browser should fetch all content that you decree on your page, regardless of what site it links to. Apparently ev

TL;DR - Timo Zimmermann believes that your web browser should fetch all content that you decree on your page, regardless of what site it links to. Apparently evil Firefox is adhering to the Access-Control-Allow-Origin header, which makes more work for him. As a non-standard user, RequestPolicy will let me block all those tracking pixels too.