Any Spotify desktop user has likely noticed their pervasive notifications: whenever "one of our friends" joins Spotify, there's both an in-app notification as well as a red badge that appears on Spotify's icon in the Dock.
Is there a way to disable an application's ability to show a badge on its Dock icon?
I'm using Lion (10.7.8), and therefore don't have the 'Notifications' prefpane that was introduced in Mountain Lion.
I tried digging around in the app's resources and .plist file to see if there was a setting to enable/disable this... to no avail.