Plug in USB devices
If I can't plug in a USB device of any kind, then I can't attach a keyboard or a mouse, so I can't put the iPad on a dock and write up a document on it or play a really basic game or anything like that?
It has an apple port which IS a usb port (granted it's used for syncing and apple specific peripherals) it also supports blue tooth keyboards.
I also can't plug in my 16GB USB Flash Drive with all my work documents, music and pictures on it? How am I supposed to get stuff to/from the damn thing?
I think Apple are intending to move the bar AWAY from document centric working to app centric working, ie, iWord shows a library of your documents but you have no way whatsoever to know where they're stored - it'll be interesting to see if they can be emailed between people or shared in other ways, though...
Multitasking
Can the iPad only run one app at once? I can't read and listen to music, or have open a text editor and a web browser at the same time? I can't browse the web and listen to music?
It does multitasking, but the only things that can run in the background are apple's on apps - so you can play iTunes music while you browse. As with the iPhone/iPod touch.
I think when the iPod first came out there was the same sense of "But it's so limited compared to these other devices" - and yet, those imposed limits turned out to be strengths, the simple interface was the key to the iPod (and the wheel...) so I don't think this computer will suit everyone, on the other hand, I can see my kids using this as their first school computer really, really well...
-pj