Airpush and the like now rendered inert
Starting in 4.1 you can now stop individual apps from pushing notifications, settings>>>apps, and you will notice that each individual app now has a box label "show notifications" which is checked by default. If the developer has included airpush or similar ads you can now disable notifications for that app all together. This is particularly useful for some of the free launcher themes and sms replacement themes out there, as those seem to be particularly hard hit by airpush. Still, support your developers! As a rule of thumb, if you've used the free theme for more than month, buy the paid version.