My comment was somewhat tongue in cheek - a reference to the stereotypical hipster who always has to have liked something before it was cool, and once it's cool

My comment was somewhat tongue in cheek - a reference to the stereotypical hipster who always has to have liked something before it was cool, and once it's cool they only like the older stuff (that you probably haven't heard of). In reality, I'm sure they do rely on word of mouth, or at least less mainstream, centralized-but-still-kind-of-centralized sources to aggregate and filter new stuff for what's good.