There was a blog post I read on HN that was about how existing large publications who were threatened by the internet (think big magazines) began to churn out l

There was a blog post I read on HN that was about how existing large publications who were threatened by the internet (think big magazines) began to churn out low-quality content that will allow their sites to dominate search rankings despite offering less value than higher-quality posts from small blogs. I think the blog post was from some kind of home air filter review site or something, but I can't find it....