Apple has posted the developers’ guidelines for content aimed to the iPhone.
It is good to see that they are telling developers to pay a lot of attention to the fact that the device is not a desktop PC and despite the fact that it supports web standards such as HTML 4.01 and XHTML 1.0, it still has some constraints like missing a mouse and a small screen.
I also appreciate very much the strong suggestion of sticking to the standards, you really want to keep things simple for the iPhone to process and using weird tags or strange constructs in your markup is not a good way to make the browser’s life easy.
Go ahead, get started with the development, as soon as you’re done reading Optimizing Web Applications and Content for iPhone.