If you want more than a simple bookmarking tool, Diigo is for you!
Compared with other bookmarking tools, Diigo enables you to do so much more. Period.
If you read a lot digitally, Diigo is for you!
Compared with other information management tools, Diigo is differentiated by its focus on e-reading.
Diigo is an excellent way for groups of people to collaboratively annotate a website online. All notes, annotations, and bookmarks go into a socially comment-able feed that allows users to co-construct knowledge.