It depends on the browser. You should check yourself through watching network traffic yourself.
I also use quite a few addons on top.
My browser doesn't send referer links out, which it could, which would point back to 8kun, which would be bad.
What would be better is if Jim cached the youtube thumbnails for all videos and served them through 128 ducks. Not much traffic, but would make it better from a security stand point for anons.