Social Bookmarking

Delicious is a popular social bookmarking program. With a free account, you can:

• save links to your favorite sites and access them from any computer connected to the Internet
• share your favorite sites with others
• "tag" sites to index and organize them for easy retrieval
• see what others have chosen to save related to your topic of interest

Diigo is another social bookmarking tool that lets you do all the above plus highlight and annotate the sites you save.
See http://livebinders.com/play/play_or_edit/9665 for background and tutorials.