I wonder if the correct answer is a blacklist for known spammy sites and the ability to turn the list off. If I never see a pinterest link, or one of those sit

I wonder if the correct answer is a blacklist for known spammy sites and the ability to turn the list off. If I never see a pinterest link, or one of those sites that just republishes stackoverflow answers unedited, I'd be fine with it. Of course, these systems always get abused and some political or news site will end up on it.