Omar wrote recently about the Tory’s iPhone app. And some individuals, such as Michael Geist and Jim Carroll have created iPhone apps. They essentially provide an iPhone friendly way to consume one’s web site, blogs, twitter, etc.
There is another point of view that says to forget that kind of iPhone app – and just make your web site or blog phone friendly. This point of view essentially says that people don’t want to download an app for every site they want to go to. And not everyone has an iPhone.