Sites all over the internets, including engadget, gizmodo and theconsumerist, are joining David Pogue in the "Take Back the Beep" campaign:
http://pogue.blogs.nytimes.com/2009/...-instructions/
Pogue is advocating against the cell phone providers using 15 second messages before your voice mail describing how to leave a message (e.g. "[Phone number] is not available right now. Please leave a detailed message after the tone. When you have finished recording, you may hang up, or press pound for more options"). These messages are specifically designed to help you burn up your minutes and increase your ARP. He estimates that Verizon, for instance, is netting around $620 million a year thanks to these little annoyances.
Pogue is urging people to complain to their cell phone provider and put pressure on them to at least allow a user to turn those messages off.
Sounds to me like something CP users could get behind.