My cousin forwarded an e-mail saying that cell phone numbers will soon be released to telemarketing companies, and we will start to receive sale calls. To prevent this, call the following number from your cell phone: 888-382-1222. It is the national DO NOT CALL list and blocks your number for five years. You need to call from the cell phone number you want to have blocked.
I did this years ago with our land line, and it made a big difference. I recommend it! Unless of course you like sales calls.