Ask HN: Why haven't bookmarks been re-invented?

Perhaps I'm not in the know, but I find it hard to imagine that we encounter a site, we bookmark it into what's often a poorly self-curated / organized taxonomy, and then rarely ever go back to it, what do other people do to manage their bookmarks, or to even share them? I love "awesome lists" as well, which are often just a bunch of well organized bookmarks anyways, so what do people do that's better than this?