[Evercookie...]

If you want to have full control over your referrer, I would suggest RefControl .

 

RefControl let's you create a list of sites, and the referrer that should be sent for each site. You can choose to send that referrer unconditionally or only for third-party requests. Additionally, you can specify the default behavior for any site not in the list.

 

Impressive add-on, thank You.

[Evercookie...]

In Firefox, you can disable the sending of the Referer header completely.

 

Alternatively you can get an extension which will do it on a site by site basis.

 

Did you already tried an extension for this ? Can you suggest the best one ?