Youtube allows you to dispense with the social comments and "related videos", creating a fullscreen mode. E.g. people normally send a link like http://www.youtube.com/watch?v=LLZhclvLbfI which yields a tiny viewing screen and commenting clutter; the fullscreen version of the video exists at http://www.youtube.com/v/LLZhclvLbfI.

I updated urlview.py to automatically transform email'd links into the fullscreen version.