Do not call, except this number

Courtesy of my friends Doug Coe and Dave Kitterman:

Remember: all cell phone numbers are being released to telemarketing companies, and you will start to receive sales calls. You will be charged for these calls, just like any other cell phone call.
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. You must call from the cell phone number you want to have blocked; you cannot call from a different phone number.
It takes about twenty seconds.
Pass it on.

Rico says it appears to do what it says it does.