1. Del.icio.us
Bookmark things for yourself and friends. Check out what other people are bookmarking.
http://del.icio.us

2. Furl.net
Furl is a social bookmarking site that makes it easy to save, share, and explore favorite web pages.
http://www.furl.net

3. Reddit.com
Reddit is a source for what's new and popular online. Vote on links that you like or dislike and help decide what's popular, or submit your own!
http://reddit.com

4. Digg
Discover the best of the web!
http://www.digg.com

5. Blinklist.com
Blinklist is building the Ultimate list of websites people care about, starting with you. Blinklist enables you to rapidly save, label and comment on any webpage you like. The fun starts when you discover other people who have done the same...
http://www.blinklist.com

6. Bebo.com
Bebo is a social media network where friends share their lives and explore great entertainment.
http://www.bebo.com

7. Sphinn.com
Sphinn is the place for web, online, search, interactive and internet marketers to share news stories, talk within subject-specific discussion forums, build a network and stay informed of upcoming events.
http://sphinn.com

8. Searchallinone.com
Combining the power of all the world's best search engines and the voting power of our social community.
http://www.searchallinone.com

9. Linkagogo.com
LinkaGoGo - the free Online Favorites and Social Bookmarking Application, its unique dynamic toolbars automatically adapt themselves, so you'll find that bookmark without a click.
http://www.linkagogo.com

10. Bringr.com
Bringr is a website for women to bring stories that interest them in order to share them with other women. Our front page is made up of the most popular brings. What our users like and bring will decide what Bringr's content is.
http://www.bringr.com

11. Propeller
Propeller.com is a Digg-like social bookmarking site that is part of the AOL Network owned and operated by AOL LLC, a Time-Warner company.
http://www.propeller.com

12. Diigo.com
Killer features for finding, managing and sharing online information. A powerful personal tool and a rich social platform.
http://www.diigo.com

13. A1-webmarks.com
A1-Webmarks is a free service that combines the convenience of a personal webmark server with the power of social webmarking.
http://www.a1-webmarks.com

14. Bloggingzoom.com
BloggingZoom is a place for people to discover and share content from any blog on the web. From the biggest online blog to the most obscure blog, BloggingZoom surfaces the best stuff as voted on by our users...
http://www.bloggingzoom.com

15. Mixx
Latest news and top videos and photos from around the web - Mixx is your link to the web content that really matters.
http://www.mixx.com