Links for 2009-10-28 [delicious.com]

• Groupsite.com
  Where Social Networking and Collaboration Meet
  (tags: collaboration community socialnetworking web2.0 tools)
• GoogleFiles.net
  File search engine powered by Google
  (tags: file searchengine research)
• GoogleTorrent.net
  Torrent search engine powered by Google
  (tags: searchengine torrents research)
• pul.se
  Real Time Web Search
  (tags: realtime aggregator research socialmedia socialsearch searchengine)
• Vorbeo.com
  Get a free poll for your website
  (tags: tools polls free web2.0 surveys)
• ProCon.org
  We promote critical thinking, education, and informed citizenship. Our sites present controversial issues in a straightforward, nonpartisan, primarily pro-con format.
  (tags: debate reference research education)