[telchior]

There's probably something to be said for human editorial in ranking sources. There are a finite number of actual news sources with actual reporting, and it occurs to me that your once your automated filter detects possible crap quality, it could kick it up to a human for review and subsequent permanent deranking.

This is one of Google's problems: they are monomaniacal about algorithmic ranking. And that's got them very far on the open web, where the number of sources is too wide and varied for human review. But while news has the appearance of being a wide domain, the majority of what's out there is regurgitated content on sites that could safely be branded with a permanent mark of distrust.

Meanwhile metrics like # of ads could incorrectly derank sites that are just run under a poor business model, but do employ good journalists / analysts / whatever.

Good luck!