Forget the rumored Apple tablet. A Facebook thin tablet would rule the Earth. While the 'net is abuzz over rumors of the Apple tablet, I'd like to point out a category of device in a form-factor that doesn't yet exist, but would be a killer product. It's also what I believe the CrunchPad tablet should have been designed to be. And that's the "thin^2 tablet". By thin, I mean it's physically thin in dimension, like the iPhone, but it's also thin in the sense that thin-clients are thin when they have nothing but firmware to access a remote server.