Cell Phone Do Not Call List

I got this e-mail at work. I don't know how true it is, but I figure I would post it anyway.

JUST A REMINDER: 19 days from today, all cell phone numbers are being released to telemarketing companies. You will start to receive sale calls and you will be charged for these calls. To prevent this, call the following number from your cell phone: 888-382-1222. It is the National DO NOT CALL LIST. It will only take a minute of your time. It blocks your number for five years.

http://www.donotcall.gov