del.icio.us is a great way to share bookmarks with others and between multiple PCs you own. Set up an account and start adding your bookmarks. There's a bookmarklet that makes things easy.
It's a cool way to see what other people are bookmarking - a constant feed of bookmarks being added is available, plus a section of the most popular ones in the database. When you add a bookmark, you get a count of how many other del.icio.us users have that one too.
Here's my list.