Keep all your bookmarks online and access them from anywhere, using any browser.
Tags and full-text search on everything make it extremely easy to organize and find stuff - no need to fumble with folders and subfolders.
Instead of simple bookmarking, you can "clip" the highlights and store them with your bookmarks. So now you can do full-text search on only "clipped" or highlighted contents to find what you want more quickly, in addition to searching in tags, titles, comments and the entire pages.
Your bookmarked pages are archived to insure they are always available as originally seen.
Not just web pages, you can also bookmark your favorite pictures on the web into albums!
You control the settings that determine what can be seen by the public, what will be shared with each group you belong to, and what will be kept private.