Everything so far has been about things you already kept. Discover is the other direction: pieces from the open web, picked against what your library already holds. Three ways to narrow it. Topics, formats, and availability. Each card says what you can do with it right now. This one reads: ready to read. What's inside opens a preview, and the preview says why. This source lets us prepare it in advance. Under that, the moments we already found. This one is different: prepares when you keep it. We don't store this publisher's text, so we prepare it when you keep it. The button says the same thing: keep and prepare. Each card also says why it reached you. And if that is wrong for you, say so. Not useful, and it goes. On the free plan the shelf still renders. Discover is a paid feature: look, open a piece at its source, and unlock to read and keep it here. The open web, with the honest version of what happens next.