A friend and I were discussing this the other day, we both agreed that Apple has done something it rarely does, create two products that both accomplish pretty much the same thing. The Macbook air was created primarily as a machine for email, web surfing, and document writing; however the Iphone already does two of these tasks well-very well and is much smaller than the Macbook Air. Additionally, with SDK what is stopping people from carrying whole presentations on their iphones and connecting them (perhaps wirelessly) to projectors at presentations. As someone who was considering buying a MBA, I subsequently decided that the Iphone accomplishes most of what I need when I want to be mobile; in contrast if I go on a trip of significant length I would want the power and tools (disk drive, dedicated graphics, decent processor, etc..) provided by either a Macbook or a Macbook Pro. Any thoughts on the Iphone cutting into the usefulness of the MBA and ultra-portable computers in general?