• Connotea
  free online reference management for clinicians and scientists
  with clinicians free management online reference scientists social by 41 users
• Faves
  Faves from My Topics
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• Furl It!
  with furl social by 26 users
• givealink.org
  Donate your bookmarks to help build a directory of the web and a search engine.
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• LookSmart's Furl
  Your Personal Web
  with personal social web by 94 users
• post to del.icio.us
  with del.icio.us post social by 115 users

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