Foxmarks (Great Firefox add-on)

Part three in my multi-part series on indispensable Firefox add-ons leads me to Foxmarks. If you have multiple computers you use, say a home computer and a work computer, and maybe even a laptop computer, and you're tired of adding and subtracting bookmarks from all the computers, then Foxmarks is for you!

Once you sign up for it initially (simple sign-up procedure, but it does require you to set up a username and password, which might be annoying to some of you. But it's free, so don't fret),
it uploads all of your bookmarks to an online location (in the Bahamas, I think). Then when you go to your other computers, you just install Foxmarks on the those, log in, and now you've got matching bookmarks on all your computers. Anytime you make a change on one computer, or add a new bookmark, it synchronizes it with all the other computers. The links toolbar is the same, the bookmarks menu is the same, everything is the same on all your computers. The only thing you have to do is set up your user names and passwords on any sites that require them, as Foxmarks doesn't synchronize that.

Once you set it up, it runs without you ever having to mess with it again. Your bookmarks are now just magically synced up on all your computers.