I think the most exiting and successful combination was what CNN did together with Facebook. CNN had a high quality live videostream with Facebook updates from your friends talking about the video stream.
The power of distribution
Current TV on the web (zoom)
Current TV was also broadcasting the event on television and used Twitter. Which is great for television, because television is a one-to-many medium and you can easily interact with the television by using a Twitter client on your phone or laptop.
Facebook was the best option for the web. Watching video on the web is more a personal and more interactive experience. This is what Facebooks adds. You’re watching the stream, not with the world (like Twitter+TV) but with your friends/contacts.
The computer is much more personal compared to a television and thus the interaction should be more personal as well. My social network is not your social network. It’s a distributed conversation.
Portable Social Networks
These kind of combinations or applications can only be created if social networks are (partly) open and allow services like CNN to use the network. For this event CNN didn’t create conversation tools, networks or any other infrastructure. They just connected the dots of Facebook to the dots of what they do best. Making live television.
This is what happens when services open up. You get the best of both worlds. Portable social networks are the future.
The New York Times homepage (zoom)