12May/090
Good article on designing iphone UI’s
http://www.the-soulmen.com/blog/2009/02/09/on-prototyping-iphone-ui/
The article talks about the challenges of designing a UI for such a small screen, and how you have to design elements to be bigger for a touch interface than you do for a mouse clicking interface - something I immediately noticed myself when I began designing my iphone app. Worth a read.