I really liked the visual representation of graphs in gapminder, however I wish it was easier to use for personal research.  I will be checking out the google version for my personal research.  I also was very interested in Mendeley but when I downloaded my papers into Mendeley it quickly reached capacity for personal papers.  I also didn’t see an option where I could automatically enter citations and have mendeley correct their order in the bibliography, which is something that endnote will do.