My dad read on some BB that he's on that cellphone numbers will soon be added to telemarketer lists. I'm not sure what BB it is so I can't see for myself.
Maybe someone here can shed some light on this.
Either way you can go to
http://www.donotcall.gov to register your cellphone number as well. It only takes about 5 minutes if that.
I just though I'd post this in case some people here weren't aware of this.