Whether you want it or not, your Web activities are tracked and analyzed in many different ways. But you don't have to put up with this, especially if you are using Firefox as your primary browser. There are a few handy Firefox extensions that can beef up your favorite browser's privacy features. Here are my three personal favorites.
Matt Brubeck, newcomer to the Mozilla Fennec Fox team, has released his Read Later extension for mobile browsers that provides offline webpage reading.
You can use a dedicated application like FBReader or Calibre to read and manage ebooks on your machine, or you can do it without leaving the convenience of the Firefox browser courtesy of the EPUBReader extension.
If you are running Ubuntu or any of its derivatives and you want to use the latest and greatest versions of the Firefox browser and the Thunderbird mail client, Ubuntuzilla has the solution for you.