Also notice that there's a keyboard shortcut to access it. For those on the Macintosh, or users of Windows '95, this will look familiar, like the desktop of file manager view of your computer. Using the metaphor of files and folders allows for rapid organization of your bookmarks into categories that make sense for you. Each folder represents a sub-menu, and each item with a purple tag represents a single bookmarked page. It's very easy to move bookmarks around so that they are organized to best meet your needs.
Many sites require users to have passwords to enter.
If you frequent a lot of sites that require passwords, you probably have several differnet passwords, and it may be difficult for you to remember them all.