12seconds, the microvlogging platform that lets you record 12 seconds of video and upload it for the world to see, has already rolled out an iPhone app. With the current iPhone technology, however, users are relegated to merely snap photos and record audio over the photos.

The iPhone 3.0 update, however, is expected to introduce video recording, which makes it perfect for 12seconds. While you can use your webcam to record a 12seconds update, the site is probably best for mobile users. Bloggers and developers are already hailing 12seconds as the Twitter killer. What do you think?