Hey I have had this list for a while, not sure if all the sites are still active but here they are:

1. Slashdot - News for nerds, stuff that matters (PR9)
2. All News, Videos, & Images (PR8)
3. Technorati: Front Page (PR8) (Only Blogs)
4. Diigo - Web Highlighter and Sticky Notes, Social Bookmarking and Annotation, Social Information Network! (PR7)
5. Backflip | Stop Bookmarking and Start Backflipping Your Favorite Places (PR7)
6. TreeHugger (PR7)
7. http://www.mixx.com (PR7)
8. Ma.gnolia (PR7)

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