"del.icio.us is a social bookmarks manager. It allows you to easily add sites you like to your personal collection of links, to categorize those sites with keywords, and to share your collection not only between your own browsers and machines, but also with others."
There. The site just put it better than I could.
I've only had a del.icio.us account for a day or so, so it's a little anemic. But I've already found a few decent new sites I didn't know about, so it must be worth the effort. Also, I have a pompous preoccupation with looking for sites no one else has posted yet. Yay, elitism.
