Of course, Twitter's value exists outside the actual content of the messages. The Twitter folks have created a device-agnostic message exchange system that links three very popular messaging platforms. This system can surely be expanded to distrubute all kinds of content. Inevitabley, along with content comes advertising. Hey presto???a business model!
So Twitter is likely a great investment, but I plan to avoid the service like the plauge. I already know I'm up to nothing much. I'll just assume you are too.