I have an iMac at work, an iBook for the road, and an iMac at home. I run Firefox on all of the machines. And I want to have my bookmarks in sync across the three machines. Bookmarks Synchronizer (FTP) is the solution. I’ve installed it. And it works.
The ‘FTP’ in the title is something of a misnomer: you can sync using an FTP server, but you can also use WebDAV over HTTP or HTTPS, which is what I’m doing.