Is this product surplus to requirements for me? Rated 4 out of 5 stars

I have been using this add on for some time now on my linux netbook (where I allow cookies for convenience sake) and it seems to do what it says on the tin.

Recently I have set up a linux desktop where I will cherish security over convenience. Is there any added advantage to using Donottrack plus in a setup where cookies are completely disabled?

Thank you.

I now give it 5 stars

This review is for a previous version of the add-on ( 

Using DNT+ in different scenarios

Great question:
Scenario 1: you're allowing cookies: DNT+ will help stop many cookies from ever being sent, so it's good to use.
Scenario 2: you're disabling cookies: DNT+ will stop tracking company's javascript from ever reaching them, so it's still good to use. Many companies use techniques that are not cookies to track you including 1 pixel GIF images.
Hope that helps!