DMGs auto mount by default if you use Safari (which the kind of people you're worried about would be doing). When they do, the window also automatically opens

DMGs auto mount by default if you use Safari (which the kind of people you're worried about would be doing). When they do, the window also automatically opens presenting them right away with the application. In the best case, they could just click on it and the right thing would happen. This works, but the results aren't what you'd expect usually, since the app will go away once the dmg is gone. The exception to this is Delicious Library 2 (unreleased), the only app I know of that will tell the user the app was loaded from the disk image, and offer to put it in /Applications for you. In the second best case, you are given the shortcut, and you manually drag it yourself. Then you click applications, and then you click the app. Perhaps a little convoluted. In the worst case(and by worst I mean, worst assuming the standard default configuration), you aren't presented with the applications folder link and you end up dragging it anywhere -- perhaps the Desktop. But, if you do that, the app still works! That's the beauty of the app bundle, it doesn't matter where you launch it from. Could the whole process be refined? Yes. And developers are actively making it better (just like they are actively making things like upgrades better with Sparkle). I for one, though, still think its much more friendly than any windows installation with its ridiculous wizards, shortcuts added to four different locations, and the mess that is the windows registry.