I am considering the purchase if an iPod Touch. Well, OK. I AM GOING to be purchasing an iPod Touch. When I read about iPhone applications, can I assume that the OS is similar enough to the iPod Touch that most or all will also run on the iPod? For example, there is a new app coming out with Parallels 4.0 that they claim runs on the iPhone. I am curious if that means also on the iTouch. Or is is a case by case basis? Another example is a Sonos controller app for the iPhone. Thanx for any insights you can lend. Bill Smith P.S. Of course I understand that there will probably be apps that require/assume phone functionality or cell connectivity. So no need to address that in the answer. I know they won't work.