I'm surprised that this article hasn't gotten more attention on HN, despite having been posted several times over the years. It's the classical story of a start

I'm surprised that this article hasn't gotten more attention on HN, despite having been posted several times over the years. It's the classical story of a startup (the bookmarking site Pinboard) entering a market with an established player (Delicious) and succeeding by listening to their user base. It's also the story from the other side: how Delicious lost their users by removing features from their site without knowing how important they were to a core group of users. (Perhaps it's the article's obscure title that keeps people away?) And it's written in a compelling and entertaining way. Near the end, there's this apt observation: "Just because you wrote it doesn't mean you know what your site is for." My work is with enterprise tools rather than a web site, but I'm also frequently amazed by the clever things that users do with the product that the designers never thought of.