I use a bluetooth iPad keyboard (the logitech one, with the smart cover magnets) and it made me much more productive on the iPad for emails and note-taking, but the next immediate problem is a near-total lack of inter-application communication. URL Schemes are a blunt, primitive, under-supported tool.<p>The final problem was round-tripping. i.e. if I work on a slide deck in Keynote for iPad, which is pretty fabulous as a stand-alone, and then take it to the desktop (via many steps as described in the linked article) to edit it, there's a ton of minor differences in the slides that are infuriating to deal with.<p>Even worse: iPad 3 + logitech smart cover keyboard = thicker & heavier than an 11" MacBook Air.<p>I expected Apple to fix the IAC issue with remote view controllers, and hoped they'd offer a smart cover keyboard to counter the Surface, but WWDC rolled past without any news.<p>Apple did expend a lot of effort to solve problems no one actually had but would help guarantee platform lock-in (i.e. SpriteKit). Sigh.