Mmm, digital magazines. They are the little bites of paid-for content that all the publishers believe we should be deeply enthralled with. Hoping to show us why exactly it is that we should all care (and pay) for prepackaged digital content is Wired's latest and most comprehensive demo of its tablet app. Setting aside hopefuls like the Joojoo and Adam for a moment, it is clear that this is intended for Apple's iPad -- the device that stands by far the biggest chance of making the digimag