12seconds showed off a really slick-looking new iPhone app at our Real-Time Stream CrunchUp earlier this month. Unfortunately, that's not quite ready yet. But in the meantime, they have another iPhone app that is ready, and it's about as simple as can be — which may be good thing.Called 12cast, the app claims to be the "simplest way to get video on Twitter." Here's how it works, you open the app, enter a title for the video, then rotate it to the left to bring up the video camera. You then record footage, hit send, and you're done. (If you're not logged into Twitter, there will be a prompt that comes up to allow you to do that.)