Social gaming network OpenFeint has finally unveiled its OpenFeint X service, which will allow developers on the App Store (and a few other mobile platforms) to add cloud-based microtransaction content to their games on top of Apple's own in-app purchase service. This is apparently a system that lives outside of Apple's own store, and allows developers to quickly and easily add in-app content without having to go through Apple's approval system. If that sounds confusing, it's because the system is still so new -- only a few developers have worked with it so far (though we're supposed to see it running in popular titles like Fruit Ninja soon), and the updates for providing virtual currency and goods aren't out yet. But this is
