The web browser Opera has been rejected from the AppStore. Some may see this as unfortunate since on other mobile devices Opera Mini and Opera Mobile replace the typically shoddy mobile browser with a nice, stable, easy to use, and quick mobile browser. In this case I don't think it's a huge loss for Opera to be rejected since the built-in Safari browser is pretty excellent in the iPhone. On the other hand it would have been nice to see if Opera did any better with their iPhone browser. Oh well.
Unlike other AppStore rejections of apps that violate no rules like Podcaster (now on Cydia) it is no surprise that Opera was rejected. The iPhone SDK Agreement does not allow you to write your own Java Interpreter which Opera did with their iPhone browser.