Still the best Rated 5 out of 5 stars
The only referer remover I know that can block sending certain addresses *as* referers, as opposed to blocking sites to which referers get sent. This means that if I have a site which I want to 'hide', I don't have to block every site that could be linked to - I just add the one site to this addon.
The regex syntax of the patterns might be a bit hard to grasp at first, but really... Just follow the examples and you'll be fine.
Still works great in 3.0.10. Please update the addon :)