Mozilla is the most used browser in the world and is ranked PR9. Getting a backlink from Mozilla thus means a lot value to your site. SO this is the guide that will help you gain more quality links on your site.
Just follow these steps and enjoy another PR9 link.
This is what you have to do to get the back PR9 links from Mozilla.org
Go to mozilla.org and register your site.
When you fill in the application form make sure you give your site address in the "Home" tab.
Once the registration is done, confirm your account and log in. Once this is done go and comment for any theme or add on and there you go you have a backlink form mozilla.org
Let us know if you find this helpful.