Say "Yes" to JavaScript →
Armin Ronacher, on Firefox’s removal of the option to disable Javascript:
My immediate response to change of removing the switch was: “Thank god, that should have happened ages ago”.
…
You don’t get extra privacy by disabling JavaScript. I can fully track you even without JavaScript. At the same time I can enhance your browser experience through better written JavaScript code that allows me to do things with your browser that plain HTML does not allow.
If you’re really paranoid about your privacy, use Firefox, enable the Do Not Track flag in your options, enable click to play for plugins like Flash or Silverlight, and install the Ghostery and Adblock extensions. Anything else is just going to break the web at your own expense.