I'm sorry I don't understand what the big deal is here. I can use my iPhone to steer a Battlecruiser if: 1) The battlecruiser had a clear API that others could

I'm sorry I don't understand what the big deal is here. I can use my iPhone to steer a Battlecruiser if: 1) The battlecruiser had a clear API that others could hook into it 2) The API is Internet accessible 3) My iPhone has Internet access I love seeing working code in action. Is the big deal here #1? I.e., the fact that people have APIs for large public displays? Or am I missing something? Please help me understand.