Social bookmarking tools like Delicious and Diigo allow users to tag and share bookmarks online, creating a "folksonomy" to organize information. Diigo's toolbar and bookmarklet make it simple to bookmark and tag pages. Personal start pages like Netvibes and Pageflakes aggregate RSS feeds in a customizable dashboard, providing a simpler interface than traditional RSS readers and allowing librarians to curate appropriate content for users. These tools can help libraries maximize the value of resources by simplifying access to bookmarked pages and RSS content.