Released this morning, a Google patent application called Social and Interactive Applications for Mass Media stands to instantly trigger communications to user’s social networks based on the type of audio recognition of certain phrases the user encounters in multimedia or broadcast applications they are listening to or watching.

By mapping the path of how a user responds with their messaging program or social network, after wathcing an event on television, for example, Google makes the case for the patent in the backgroudn section of the patent application:
Another social and interactive television application that is lacking with conventional interactive television systems is the ability to dynamically link a viewer with an ad hoc social peer community (e.g., a discussion group, chat room, etc.) in real-time. Imagine that you are watching the latest episode of “Friends” on television and discover that the character “Monica” is pregnant.
You want to chat, comment or read other viewers’ responses to the scene in real-time. One option would be to log on your computer, type in the name of “Friends” or other related terms into a search engine, and perform a search to find a discussion group on “Friends.”
Such required action by the viewer, however, would diminish the passive experience offered by mass media and would not enable the viewer to dynamically interact (e.g., comment, chat, etc.) with other viewers who are watching the program at the same time.
For more information about the new patent and what it means, take a look at this ZDNet article.