[dang]

Can you explain this again in more detail? Not being versed in SEO ways, I want to understand it but don't.

[kuu]

The more links your website has from some other websites, the more popular your site is. If these links come from "an authority" (an already popular site, like HN, Reddit, Wikipedia or other main website like that), the more popular your site is.

By "popular" I mean more relevant for Google.