[Wowfunhappy]

I mean per site that displays ads, not the ads themselves.

Right now, most people I know who use adblockers will "whitelist" websites they want to support, and/or who display ads they find nonintrusive.

I really think the default should be switched, so websites can display ads by default but a user can whitelist domains they dislike. At minimum, it should be possible to switch to this functionality.