Now the question is how to kill this Evercookie? There is a tool called Anonymizer Nevercookie that claims to kill them, while still letting you keep useful cookies on your hard disk. Anonymizer Nevercookie is a free Firefox add-on. Install it and launch Firefox. (Nevercookie is used with private browsing mode, so ‘Choose a user profile’ screen may appear, if you haven’t used Firefox user profile previously). Then, go to Tools – Start Private Browsing. A new browser window will open. It will be branded with a blue Navigation Menu bar. Use this window for your private browsing session and without keeping Evercookie. To leave private browsing mode, close the private browsing window in the parent Firefox window, go to Tools – Stop Private Browsing. (via – Jkwebtalks)