I have been thinking long about the idea of an App Store in OSX for apps that will run on the Mac. Canonical has released their version of an App Store, which is basically a nicer presented version of aptitude (its package manager). To have something similar to this on OSX would be brilliant. Yes, there is plenty of software you can get without an app store, but this isn't the whole issue. - It would reduce the use of Google search (something I'm sure Apple would like to see.) - Package management is something I miss from Linux. Think Apple Software Update just for all of your applications, much like the ability in iOS/iTunes for that app store. - Easy for users to buy their apps. - Hopefully Apple could get iOS applications running on OSX almost like desktop widgets. Of course, there is the worry that they would be very restrictive with the apps allowed, but I would envision the ability to add repositories for non approved apps.