http://tags.library.upenn.edu/tag/tagging+ie PennTags Feed http://tags.library.upenn.edu/makerecord/url/754 http://tags.library.upenn.edu/makerecord/url/754 <p>This is linked from inside Pluck, which I was using to see how it's working these days.&nbsp;</p><p>Shadows is a social bookmarking service for discovering, sharing and managing information on the web. Shadows supercharges this information with a &quot;Shadow Page&quot; &mdash; a community blog for any web page that includes views, ratings, tags, and comments by you, your friends and the Shadows community.</p>