When I recently stumbled upon Diigo.com I found the perfect solution for bookmarking and annotating web pages instead of saving them as PDFs or wasting paper and ink by printing them. Diigo.com and Delicious.com work similarly whereby you can annotate, tag, and share bookmarks with other members of the site. The site provides a downloadable toolbar for Firefox, Flock and Internet Explorer web browsers for online browsing and interaction. For other browsers, including Safari, it provides a bookmarklet similar to the toolbar but not quite as feature rich.