With this tool i'm saving a lot of time because i access the internet from 2 computers and i don't need to save all my passwords in my agenda, and o don't need to write down all websites i want to visit.

In addition to the mentioned features, when you close firefox, google sync saves all opened pages. When you open firefox again, you will be asked if you want to re-open those pages. This is similar with Firefox 2 feature ?Restore Session?, but it is working for different computers too. If you are at work and you are viewing some pages, but it is time to go home, you can close your browser and open it from the home computer with the same pages opened.

For download and install instructions: http://www.google.com/tools/firefox/browsersync/