Jakob Nielsen has some thoughts on the most recent Amazon Kindle. Part of his review discusses the Kindle app for the iPhone; he finds the Help a little wanting. Specifically, he mentions that it doesn’t include an embedded help file, but simply directs people to the general Amazon help site, which is optimized for PC display rather than for a mobile viewing context. Not surprisingly, the W3C’s Mobile Web Best Practices extensive guidelines helps designers and writers better meet the challenges of mobile contexts.