I started using Firefox about a month ago.  I was skeptical whether it could be as useful as Internet Explorer, and it does have a few shortcomings.  But the large number of free extensions available for Firefox throws the balance the other way! Firefox rocks!

Bookmarks Synchronizer is a Mozilla Firefox extension that let you connect to an FTP/WebDAV server and synchronize your bookmarks that are stored in an XML file. Setup is easy; just write in your FTP/WebDAV server address, username, password and a name for the XML file.

This file is a bit hard to find.  The versions available on the normal Firefox extension sites don't have it -- but I was able to find it via a Google Search at Personal Babblishing.

It works great on my Firefox 1.5 (Linux).  Now Linux is immune to Windows viruses, so please scan it for any Windows viruses before you install it.