Firefox Sync extension from Google
Just found out about the Google Browser Sync extension for Firefox.
A review was posted to DesktopLinux.com:
Steven J. Vaughan-Nichols: First impressions of Google Browser Sync
I'm using multiple computers more often lately, but when I'm on my PowerBook I usually use Safari, as I have since Mac OS X Tiger was released. This might be a reason to switch back to Firefox.