Comment 5 for bug 1088085

When adding an app to the launcher there should *general* be a glowing around the icon for ~1 sec - like a level-up-glow in PC games, to visualize that an app has been added to the launcher.

1. If it's a commercial item, allow the dragging but make the icon color in the launcher grayscale (or put a big lock on it, or something like that). Then open up a page in USC and ask if the user wants to buy application XYZ. If he press "no" remove the grayscaled item from the launcher -> visual blob effect to let it disappear (use the same effect for normal removal of launcher icons).

2. If it's an undraggable icon, then the icon should shake when trying to grab it -> visualizing that icons can general be dragged, but not this one (maybe add a 3D effect for the shaking icon, not a 1D effect).

3a When dragging an icon to the launcher - and there is already one - the icon should when released fly down to the already installed icon, moving the launcher focus to reveal the previously hidden icon and then both be merged (use the same glow effect described above – the level-up-glow).
Result: one app icon left in the launcher.

3b Same as 3a but let the (hidden) icon fly up to the position where the user dragged the icon from the USC. This would have the benefit of not having to move the launcher and be therefore visual more quiet (I'm a fan of having less visual noise).

PS: Ubuntu needs much more effects to clarify actions.