BookmarkSync- automatic bookmark sync between browsers
http://www.bookmarksync.com/index.php
Here is a good video tutorial & blog post about bookmark synchronization.
BookmarkSync is unlike other social bookmarking services. It is a unique system that provides real-time automatic bookmark synchronization between all your different browsers, computers, and operating systems. Add a bookmark to Internet Explorer at work, and it will automatically be sent to your Firefox browser at home and your Safari browser on your Mac! It supports Unicode so it works for bookmarks in all languages.
BookmarkSync encrypts your bookmarks so you can securely access them anywhere in the world. You can access your links through your PDA or other mobile devices, RSS feeds, or publish your favorites using JavaScript or JSON feeds.
BookmarkSync lets you find what other people are bookmarking in hundreds of thousands of unique bookmark 'Clusters'. You can discover new, highly relevant websites, faster and in greater quantity using BookmarkSync clusters than with any other social bookmarking network.
BookmarkSync is a good service as opposed to delicious but I feel more at peace to have my bookmarks synchronized offline. As long as the browsers your using can export bookmarks then this video tutorial will show how to <a xhref="http://www.pclicious.com/sync-your-bookmarks-synchronize-bookmarks-between-ie-internet-explorer-and-mozilla-firefox/">Synchronize your bookmarks</a> between all browsers so you can carry with you at all times on a USB drive or even MP3 player.