I recently started in a new job and after a day or two a colleague of mine asked me if I used Delicious. I had never heard of it and he kindly showed me how it works. After using it for a few hours a new world (within my bookmarks chaos) opened up for me. This is just a fantastic tool and I can not understand why I have not heard about this before.
You simply create a user account and start adding your bookmarks there. You can specify title, description and tags for each bookmark you save. Delicious have plug-ins for the most used web browser and by installing the plug-in you get fast access to the main functions. I installed it on FireFox 3 (my preferred browser) and it works very smoothly.
You can also share your bookmarks with other users.
When using delicious you can easily access all your bookmarks no matter what computer you are using.
If you have not tried it yet I deeply recommend it.