Delicious is a social bookmarking tool. Its a way for people to find, store and save links to their favourite web pages.
We all bookmark pages and sites, but usually this is via a browser. Delicious is designed to allow you to access ALL your bookmarks from any computer. Delicious also allows you to share bookmarks and categorise your own bookmarks to make your search within an article easier.
The delicious website describes the service perfectly:
“Are you having a hard time keeping track of all the interesting Web pages you find? Would you like access to your bookmarks from any computer? Delicious can help. Delicious keeps all your bookmarks in one place so you will never lose track of your bookmarks again. Since we store your bookmarks online, you can get to them from any computer, whether you’re at home, at work or on the road.”