A few weeks ago, Twitter released a new # Discover tab on its web app. I do not believe the feature has made its way into the android app yet. At least I don't think I have it in my android app.
What's great about Twitter Discover is that I get links I don't get on Techmeme and Hacker News. I see things about sports, NYC, music, and other things that the people I follow on Twitter care about that have nothing to do with tech, venture capital, and startups.
Twitter Discover had been, until recently, the same links for everyone, or at least the same links by geography. I am not entirely sure to be honest. But now Twitter Discover is personalized for every Twitter user. And, like Who To Follow which got yet another upgrade yesterday, Twitter Discover will continue to evolve and improve as Twitter adds more data science, more data, and more user feedback into its development.