I really like the "unpreferred" idea, but I think it should be just a setting. Sometimes the filtering/"unpreferring" should be opt-out (e.g. gore, porn), other

I really like the "unpreferred" idea, but I think it should be just a setting. Sometimes the filtering/"unpreferring" should be opt-out (e.g. gore, porn), other times opt-in (left-wing propaganda, right-wing propaganda, ...), but at all times configurable by the user.