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Diigo has long been a favorite tool of mine for bookmarking and collaboration. Diigo easily passes my criteria for adding a tool to my toolbox. The tools I use have to do a number of things beyond basic stability and usability: 1. Save time by automating manual stuff, or taking advantage of work I’m already doing. 2. The tool or mashup has to be easy and quick to use. One or two clicks, less than 30 seconds. 3. Foster real connection, collaboration and participation. Now Diigo has added another reason to love them, integration with Wordpress, (and other blogging platforms).

Diigo: Another Del.icio.us? by Jason Hahn Diigo (pronounced “deego”) is a brand new social annotation site.  Social annotation is “a superset of social bookmarking,” the site (www.diigo.com) says.  It is similar to del.icio.us in that it is a social bookmarking tool, and even uses the del.icio.us API to give users the ability to simultaneously tag sites on both their Diigo and del.icio.us accounts. The key differentiation between Diigo and del.icio.us is in the specialized annotation features of Diigo.  Users can highlight specific paragraphs or images on a page and post either public or private sticky notes that can be shared with other users who can choose to respond to your sticky notes.  These annotations can be saved for later review and can also be forwarded through e-mail. This further capability and functionality of specialized annotation features is primarily achieved through the Diigo toolbar.  The toolbar allows the user to search through numerous resources and also allows the user to bookmark sites of interest.  The Inbox on the toolbar lets users keep up-to-date with their tags. Though this may put Diigo in contention with del.icio.us, these two sites can also be seen as complements to one another.  Regardless, it seems that social bookmarking is quickly becoming a battleground that leaves the door open to new competitors with fresh ideas, and that annotation may become a key to success in the arena.