List social bookmark sites

Social bookmark site where you can save your favorite links and share with others. All links are in just one place. These are some social bookmark sites with high rank
http://del.icio.us
http://www.digg.com
http://www.technorati.com
http://www.netscape.com
http://www.stumbleupon.com
http://www.slashdot.org
http://www.furl.net
http://www.nowpublic.com
http://www.reddit.com
http://www.simpy.com
http://myweb2.search.yahoo.com
http://google.com/bookmarks
http://favorites.live.com