Pretty cool concept. I love the flowing endless canvas on the public page, it's what I wish Reddit and HN had. If clipboard.com fails, you could always pivot and pitch that component as a SaaS for aggregators and blogs, or something.
Some UX suggestions: I sign up, and I said I wanted to follow music, programming, and tech, but I get to the Home page and I don't see any way to see others' content based on that subscription. Sure, I haven't clipped anything yet, but you already have the content at Public, so why not show me what you can do right away? Also, it's unclear that I need to click the Visit button to visit a post. Think of Reddit Enhancement Suite: it shows inline pictures, but if you click anywhere on the picture or on the link itself, it takes you to the original source. Here, clicking the picture does nothing.
Some UX suggestions: I sign up, and I said I wanted to follow music, programming, and tech, but I get to the Home page and I don't see any way to see others' content based on that subscription. Sure, I haven't clipped anything yet, but you already have the content at Public, so why not show me what you can do right away? Also, it's unclear that I need to click the Visit button to visit a post. Think of Reddit Enhancement Suite: it shows inline pictures, but if you click anywhere on the picture or on the link itself, it takes you to the original source. Here, clicking the picture does nothing.