Updating Firefox on Ubuntu

I can't find a solid reason to update my browser (unless some site or software that I use asks me to). Today I got tempted by a message on my gmail account asking me to do that. So here is how to do it:

sudo add-apt-repository ppa:mozillateam/firefox-stable

sudo apt-get update

sudo apt-get upgrade

This was method 2 among 3 ways to do it that I found under this post.

One new feature Firefox5 has is the Sync feature. So now you can have all your tabs and browsing needs saved (safely as I hope) and you can access then from any machine.