iPad Usability: First Findings From User Testing (Jakob Nielsen's Alertbox)
For the last 15 years of Web usability research, the main problems have been that users don't know where to go or which option to choose — not that they don't even know which options exist. With iPad UIs, we're back to this square one.
more on useit.com
Nielsen on iPad's usability. In short: the interface beautiful, but suffers from lack of standardized controls and metaphors.
Of course it didn't take the members of “Nielsen is a boring guy who just don't get” camp too much time to come up with a rebuttal:
He almost gets it.
more on johnnyholland.org