Hacks built using SkypeAPI are property of Skype

The Skype API lets developers build hacks onto the Skype application. It doesn't give one access to the Skype protocol but it allows external applications to interact with the Skype software. Some folks over on the VoIP USER forum have noted that the Skype EULA says Skype owns anything developed on the SkypeAPI. It suggests that Skype would have commercial rights to anything developed using the SkypeAPI.