Here I was using Diigo, Delicious, Google Notebook, and Zotero for my researching, bookmarking, annotating, and sharing. While all strong tools in their own right, it is pretty clear looking at this list that this is what some would call OVER DOING IT!
best possible tool that streamlined social bookmarking, social researching, and social reading.
Relevant to Diigo Community discussions of the value of tagging: the examples given here are not simple tags; these are examples of expressive _comments_.