Group items tagged

"Instead of just bookmarking, Diigo allows you to highlight text and attach sticky notes to specific parts of web pages. Diigo highlights and sticky notes are persistent in the sense that whenever you return to the original web page,"

"Diigo allows its users the options to bookmark, highlight, and tag selected web-pages that can be retrieved from any computer, any time, any place. Users find its features of highlighting and tagging a great way to organize online research. "

"If you have any need for team-based research, be it a class, a club, an interest group, or a work group, Diigo groups are ideal for you. A Diigo group can be public, private or semi-private."