Not using Firefox browser? You should be.

Let me explain just one of the beneficial add-on features.

"There is a growing interest in who tracks us, and many folks are restricting the use of web cookies and Flash to cut down how advertisers (and others) can track them. Those things are fine as far as they go, but some sites are using the ETag header as an identifier: Attentive readers might have noticed already how you can use this to track people: the browser sends the information back to the server that it previously received (the ETag). That sounds an awful lot like cookies, doesn't it? The server can simply give each browser an unique ETag, and when they connect again it can look it up in its database. Neither JavaScript, nor any other plugin, has to be enabled for this to work either, and changing your IP is useless as well. The only usable workaround seems to be clearing one's cache, or using private browsing with HTTPS on sites where you don't want to be tracked. The Firefox add-on SecretAgent also does ETag overwriting."

So if you have not done it already, those of you who are adventuresome can download Firefox browser and install the add-on SecretAgent. 

Don't do it at all if this seems confusing to you. Your better off leaving your browser alone.

But for the tech minded who like getting under the hood...
 

Use this addon to disable compatibility checks: https://addons.mozilla.org/en-US/firefox/addon/checkcompatibility/?src=search

Also here are some more addons I think are worthwhile that I forgot to add:

https://addons.mozilla.org/en-US/firefox/addon/betterprivacy/
https://addons.mozilla.org/en-US/firefox/addon/calomel-ssl-validation/?src=search see the options and documentation on this addon

https://addons.mozilla.org/en-US/firefox/addon/cryptocat/?src=search
https://addons.mozilla.org/en-US/firefox/addon/perspectives/?src=search
https://addons.mozilla.org/en-US/firefox/addon/dnssec-validator/?src=search
https://addons.mozilla.org/en-US/firefox/addon/self-destructing-cookies/?src=search
 https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/