What is social bookmarking.
What social bookmarking effect on seo project.

Sites like Delicious.com - Discover Yourself! (http://delicious.com/)
Or read here: Social bookmarking - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Social_bookmarking)

What is social bookmarking.
What social bookmarking effect on seo project.

Social bookmarking sites allow you to store, tag and share links. You can share these links with friends and colleagues. You can also access your links from anywhere in the world.

So, if you find a page that is of interest you can easily save it for future reference or share it with other people, simply click on one of the Social Bookmarking links to add to your list.

All of these sites are free to use but do require you to register. Once you have registered you can begin bookmarking.