Just thought about the concept of the AppStore. It looks very problematic for open source software. Since developers have to register for Apples iPhone Developer Program (and pay at least 99$) projects need someone with “final controll” about the Application and the source. The whole deal of open source Applications (simply branching as a skilled user and using your own customized app) will probably be impossible with the iPhone.
In addition to this: Will we every see Apple accepting iPhone apps in the AppStore which canibalize their own apps (like a maps application using the wiki style maps created by the opensource project openstreetmap.org instead of Googles commercial map data)?