When I initially tried the Droid X on for size before ultimately going to the iPhone 4 (currently have the iPhone 4S), there was this neat little app that worked wonderfully called SemiSilent that basically used your contact list, and at any give time with a touch of a finger choose who would be able to get a hold of you at that time. It was very simple to use! Since owning the iPhone I've often wondered why there isn't a SemiSilent App for iPhone. It's such a simple little app that I'm surprised either Apple didn't have it come with the iOS or an App developer hasn't created it. Anyone have any suggestions?