How Palm Did It

Palm has some pretty big balls.  In order to re-enable iTunes synching, they just went ahead and copied Apple's USB vendor ID.  This is going to be tough for Apple to workaround.

Better yet, Palm has filed a complain against Apple for violating USB standards, something that Palm is arguably doing now.  

http://www.precentral.net/how-palm-re-enabled-itunes-sync