I noticed that some porn websites are using Youtube to host their videos(not googlevideo.) The youtube button on the embed player will always link to the origin video page on Youtube but they disallow to watch on youtube somehow. And the videos cannot be embedded on other websites either. web ohyeah1080.com and xmovies247.com The videos of those examples are not just set to private video or unlisted video. It will show "it's a private video" if it's a private video. The unlisted video is able to watch on youtube. Is anyone know how they do it?