Both this and Youtube's own Feather beta seem to lack support for playlists. I like playlists for listening to music at work, for example Brad Neely's "America, Now" videos (http://www.youtube.com/watch?v=OPQrXUpvkuc&list=PLD8217FD2EE...). Also useful for watching web series like Marble Hornets. I love a simpler experience, but I think content creators will want playlists.