Social Bookmarking

Del.icio.us is a social bookmarking site. Users post their favorite websites as links and tag them with words such as education, space, music, art, etc. Each tag has an associated RSS feed so users can subscribe to the categories to be notified when new links are posted. You can subscribe to my del.icio.us page here: del.icio.us/csiwins
And, if you set up an account try saving a bookmark and tagging it with for:csiwins. That will put it into a place that *I* can see and I can even subscribe to. What a great way to share bookmarks directly with someone. Go ahead. Give it a try.
Here's an excellent article about social bookmarking: Wikipedia article
Others: