Found here:
Now you can sync your bookmarks over FTP,
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
I have used it already and it works great, now I don’t have to worry about leaving my usb drive at work. If you don’t remember why my usb drive would factor in, it’s because I use Portable Firefox.
If you wanted to see my bookmarks they are here.
