Buyrun;
  1. Digg - What the Internet is talking about right now
  2. Social bookmarking service. Fast tagging and posting to all major social websites - SocialMarker.com
  3. reddit: the front page of the internet
  4. Delicious - Discover Yourself!
  5. Slashdot: News for nerds, stuff that matters
  6. dzone.com - fresh links for developers
  7. Diigo - Web Highlighter and Sticky Notes, Online Bookmarking and Annotation, Personal Learning Network.
  8. https://www.tumblr.com/
  9. Connotea: free online reference management for clinicians and scientists
  10. folkd.com - social bookmarking
  11. linkaGoGo - free Online Favorites manager and Social Bookmarking Application
  12. URL.ORGanizer: Store, share and tag your favourite links
  13. Index4 - Latest News, Headlines, Stories, Images and Videos