Diigo8 touts itself as “a powerful research tool and a knowledge-sharing community,” and allows users to bookmark pages but provides a particular feature of note, the capability to “add sticky notes” to tagged pages. The web site facilitates collaboration on projects by allowing users to create groups and communities. Diigo's home page specifically states the site can be used to “discover quality resources on any subject or get personalized recommendations.” Other useful features include tag clouds and links to subject-specific news web sites, user-defined subject lists, and communities of users.