Ask HN: How to filter the noise, rate/endorse the web?

It will become increasingly difficult to differentiate between truthful content and generated but not entirely correct or even intentionally manipulative content. Even if I can laboriously check one or the other blog post for truthfulness, my grandmother certainly cannot.

Is there a system (browser plugin?) with which I can rate/endorse websites?

It would be practical if, as an expert in certain topics, I could rate entire domains or individual pages and, conversely, benefit from the ratings of others in areas in which I have no expertise. I'm thinking of a GPG-based (Web of Trust) system. Of course, one would have to ensure that only 1 rating can be submitted per user (phone number or Gov-id validation?).

Note: I assume there are search engines trying to solve this issue (which ones?), but I would like to see a system that works independently of how I access the web (via search engine or URL).