Simultanious viewing?

Spending some time exploring all the new emerging technologies challenging the traditional TVviewing and bringing the TV experience online, combining the best of both worlds, I am a bit confused about the lack of keeping the feeling of flow TV. Watching Youtube, dailymotion, currentTV, Jalipo and Joost I miss something. Even though it seems as there are a tendency towards on-demand viewing I see plenty of possibilities of keeping the aspect of flow and live at the same time as the possibilities of control. Especially at Joost where they very nicely have combined chat functions and viewing it doesn’t make sense that there aren’t a flow to gather around with? Have I missed something. It would be obvious to be able to invite somebody to view content simultaniously as re-creating the feeling of shared viewing across space and context. But can’t find out if I’m just a newbie in Joost or if online TV just is killing flow TV.