keyboard - yes
That's incorrect, the USB port does support a keyboard as I have used it a few times already.
I even tried some old 128MB uSD cards with it to ensure the SD card slot worked before I bought some more memory...worked like a charm.
I had a 1st Gen iPad and although I loved it I wanted something that would sync up with my EVO 4g without hassle. The Acer A500 does everything the iPad can do and more with the only short coming currently being the apps. Hopefully we'll continue to get more and better quality apps to change that.