[Philip Lelyveld comment; what is 'second screen' and when does it add value are open questions.]
The main point of Zeebox is to see what other people are saying about the show you’re watching, and to soak up other goodies while you watch. Like, say, an explainer for HBO’s byzantine “Game of Thrones.”
But the problem with Zeebox, like every other social TV app, is that it seems designed around a business problem — how can we get people to stay with our shows longer or hang out on our service? — instead of consumer problems.
See the full story here: http://allthingsd.com/20120926/comcast-and-nbc-put-money-marketing-into-a-social-tv-app-zeebox-lands-in-the-us/