Ive mentioned my hatred for ads pushed to notification bars before. Theyre downright intrusive, and Ill uninstall any app that does it, no matter how good it is. Unfortunately, you dont quite get that kind of option with your carrier, so I really hope all of them learn from T-Mobiles little error. The carrier sent out notifications to users regarding their free VIP zone, mistakenly by the sound of their response.
Android Phone
See also:
techage, T-Mobile apologizes for inadvertently sending out notification bar ads