This is hot off the presses and now Twittervision is allowing you to connect into their app via a new API. From their twittervision API website:

"Yes, it's time. We wanted to publish easy ways for people to work with the location-based information available through Twittervision and Twittermap. This is a start. There is more coming."

It looks like you can get the location and status of a user so far. We will see how the API and Twittervision develops and what they have up their sleeve next. It is just a guess but I assume that they (twittervision) must be getting hit with a ton of traffic these days..