>A concept for a web browser building upon the features of Spotify, centered around making lists of and sharing links, following people, and having open web apps and the discovery of them built-in.
A "social" browser.
Yes, just what the world needs. We don't have enough ways to follow people and share BS links.
Spotify versus thousands of music recommendation services, however, highlights why this would be different. Sending songs and making lists in Spotify is just so seamless and well-integrated, it's a wonder how it can actually feel like a new thing although the idea is old.