@Zed : besides Cydia, there is another possible distribution channel that - unlike Cydia - is perfectly legal. Bundle your application as library so you don't have to disclose your source code, wrap it into XCode project and sell it to iPhone developers. They can legally compile it and install on their iPhone (and iPhone of their pals). Given the amount of iPhone developers, each able to address up to 100 devices, it is not that insignificant channel as you might think.