http://www.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/deeplinks/2008/02/embedded-video-and-your-privacy
For instance, if you're logged into YouTube and you watch an embedded YouTube video on some other site, YouTube can still recognize you because your browser will still send a personalized YouTube cookie.
This means that loading an embedded video from within a blog could enable the video hosting site (and, in some cases, its advertising partners) to compile a history of which blog entries you were reading and when — even if you didn't try to play the...