"Diigo V4 launches today! Needlessly to say, we are excited that V4 finally gets to say hello to the world!"
Diigo does lots and lots and lots of things, and it can be overwhelming, so we're just going to touch on what I think are the three most useful (and easily accessible to beginners) functions of Diigo:
1. Online/Social Bookmarking (ignore the delicious specific stuff, it's the same idea), Tagging and Linking
2. Annotating (for example, this page)
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